In the early twenty-second century, the starship Enterprise is launched. Her mission is to explore strange new worlds, seek out new life and new civilizations and to boldly go where no humans have gone before. Along with an alien chief medical officer and first officer, this crew with only NASA-level training and what the Vulcans know of local space, begin to explore and begin the legacy set for other Enterprise crews and captains like Robert April, Christopher Pike, James Kirk, John Harriman, Rachel Garrett, Jean-Luc Picard, William Riker, Edward Jellico and others.
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SEASON ONE & TWO
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The first two seasons of Star Trek: Enterprise depict the exploration of interstellar space by the crew of an Earth ship able to go farther and faster than any humans had previously gone, due to the breaking of the Warp 5 barrier, analogous to the Bell X-1 breaking the sound barrier. The crew faces situations that are familiar to Star Trek fans, but are unencumbered and unjaded by the experience and rules which have built up over hundreds of years of Trek history established in previous Star Trek series. Star Trek: Enterprise takes pains to show the origins of some concepts which have become taken for granted in Star Trek canon, such as Lt. Reed's development of force fields and Captain Archer's questions about cultural interference eventually being answered by later series' Prime Directive.

A recurring plot device is the Temporal Cold War, in which a mysterious entity from the 27th century uses the Cabal, a group of genetically upgraded Suliban, to manipulate the timeline and change past events. Sometimes sabotaging Enterprise's mission and sometimes saving the ship from destruction, the entity's motives are unknown. Agent Daniels, a temporal agent from the 31st century, visits Captain Archer occasionally to assist him in fighting the Suliban and undoing damage to the timeline.

In the past ninety years since Star Trek: First Contact, the Vulcans have been mentoring humanity to what they see as an appropriate level of civilization, routinely holding back scientific knowledge in an effort to keep humans stranded close to home, believing them to be too irrational and emotionally-dominated to function properly in an interstellar community. When Enterprise finally sets out, the Vulcans are often conspicuously close by. This generates some conflict as, in several early episodes, Archer and others complain bitterly of the Vulcans' unsubtle methods of checking up on them.
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SEASON 1 EPISODES: 2001-2002
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S01E01-02	(1)	"Broken Bow"
September 26, 2001
First contact with Klingons; the Enterprise (NX-01) is launched. Archer finds himself in the middle of a Temporal Cold War.
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S01E03	(2)	"Fight or Flight"
October 3, 2001
Hoshi faces her fears on an alien ship whose crew was murdered, while Malcolm tries to upgrade the ship's defense system.
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S01E04	(3)	"Strange New World"
October 10, 2001
A storm traps an away team on an alien world, while spores cause them to experience psychosis.
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S01E05	(4)	"Unexpected"
October 17, 2001
Trip helps an alien crew fix their engines only to find himself pregnant.
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S01E06	(5)	"Terra Nova"
October 24, 2001
An early human colony on Terra Nova mysteriously disappeared 70 years ago and Enterprise is sent to find out what happened to them.
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S01E07	(6)	"The Andorian Incident"
October 31, 2001
Archer, Trip, and T'Pol are taken hostage by Andorians in the Vulcan monastery of P'Jem.
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S01E08	(7)	"Breaking the Ice"
November 7, 2001
Malcolm and Travis seek Eisilium on a comet while T'Pol considers marriage to Koss.
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S01E09	(8)	"Civilization"
November 14, 2001
Archer, Trip, Hoshi, and T'Pol go undercover to observe a pre-industrial civilization to find they aren't the first observers there.
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S01E10	(9)	"Fortunate Son"
November 21, 2001
The cargo ship Fortunate was attacked by Nausicaans and the Enterprise lends a helping hand only to find the crew of the Fortunate has secret plans.
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S01E11	(10)	"Cold Front"
November 28, 2001
Archer finds out a crewman on Enterprise is helping to fight the Temporal Cold War against Silik and some of the Suliban.
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S01E12	(11)	"Silent Enemy"
January 16, 2002
Archer faces an enemy that doesn't respond to hails while Hoshi tries to find what Malcolm's favorite food is to surprise him for his birthday.
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S01E13	(12)	"Dear Doctor"
January 23, 2002
Phlox & Archer must decide where their morals lie about letting a species live or die from a pandemic.
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S01E14	(13)	"Sleeping Dogs"
January 30, 2002
Hoshi, Malcolm and T'Pol board an unresponsive Klingon ship on decaying orbit into the crushing pressures of a gas giant.
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S01E15	(14)	"Shadows of P'Jem"
February 6, 2002
T'Pol is recalled to Vulcan after the events of "The Andorian Incident". During her final away mission, she and Archer are kidnapped, leading to a confrontation between Vulcans and Andorians.
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S01E16	(15)	"Shuttlepod One"
February 13, 2002
Reed and Trip are stranded in a shuttlepod with no foreseeable help arriving before life support runs out.
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S01E17	(16)	"Fusion"
February 27, 2002
Enterprise encounters a crew of emotional Vulcans; T'Pol experiences her first mind meld, with unsettling results.
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S01E18	(17)	"Rogue Planet"
March 20, 2002
Enterprise finds a solitary planet with Eska hunters hunting an indigenous species.
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S01E19	(18)	"Acquisition"
March 27, 2002
A group of Ferengi hijack Enterprise, but Trip, Archer and T'Pol play mind games with the pirates in order to win back their ship.
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S01E20	(19)	"Oasis"
April 3, 2002
Archer, T'Pol, Trip and Travis find a crew apparently alive on a ship that crash-landed years ago.
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S01E21	(20)	"Detained"
April 24, 2002
Archer and Travis find themselves imprisoned in a Suliban internment camp by the Tandarans.
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S01E22	(21)	"Vox Sola"
May 1, 2002
An unknown alien boards Enterprise and starts capturing crew members, linking them together neurologically.
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S01E23	(22)	"Fallen Hero"
May 8, 2002
Enterprise finds itself under attack while transporting a Vulcan ambassador.
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S01E24	(23)	"Desert Crossing"
May 8, 2002
Enterprise finds itself aligned with a terrorist group when Trip and Archer are forced to cross many kilometers of desert on an alien world.
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S01E25	(24)	"Two Days and Two Nights"
May 15, 2002
After weeks of detours, Enterprise arrives for shore leave on Risa. While there, Archer encounters a woman who knows more about the Suliban than she's willing to admit.
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S01E26	(25)	"Shockwave (Part I)"
May 22, 2002
The Enterprise is recalled to Earth after the crew is blamed for the accidental destruction of a colony world. En route, it is hijacked by Suliban and Archer is transported to a decimated 31st century.
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SEASON 2 EPISODES: 2002-2003
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S02E01	(26)	"Shockwave, Part II"
September 18, 2002
As a group of Suliban take over Enterprise, Archer tries to return to the 22nd century.
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S02E02	(27)	"Carbon Creek"
September 25, 2002
T'Pol tells the tale of crash-landed Vulcan crew on Earth in the 1950s.
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S02E03	(28)	"Minefield"
October 2, 2002
Enterprise snags a cloaked mine and Reed and Archer race to disable it during first contact with the Romulans.
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S02E04	(29)	"Dead Stop"
October 9, 2002
Heavily damaged by the Romulan mine, Enterprise is repaired by an unmanned and automatic repair station with a mind of its own.
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S02E05	(30)	"A Night In Sickbay"
October 16, 2002
Porthos causes a diplomatic incident on an alien world and becomes ill from an alien pathogen; Archer goes stir crazy in sick bay while waiting for Porthos to recover.
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S02E06	(31)	"Marauders"
October 30, 2002
Archer barters for deuterium from a colony plagued by Klingon marauders seeking deuterium as well.
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S02E07	(32)	"The Seventh"
November 6, 2002
T'Pol is reactivated as an intelligence agent as she is assigned to apprehend a fugitive. During the mission, a dark secret from her past is revealed, shattering her emotional control.
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S02E08	(33)	"The Communicator"
November 13, 2002
After a short trip by Archer and Malcolm on a planet, Reed discovers he lost his communicator on the pre-warp planet and is captured while trying to retrieve it.
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S02E09	(34)	"Singularity"
November 20, 2002
Enterprise charts a course through a trinary star system to investigate a black hole but the crew finds themselves with a case akin to Obsessive-compulsive disorder.
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S02E10	(35)	"Vanishing Point"
November 27, 2002
After her first trip through the transporter, Hoshi finds herself turning invisible and the rest of the crew believing she's dead.
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S02E11	(36)	"Precious Cargo"
December 11, 2002
While answering a distress call, Trip is kidnapped along with a spoiled alien princess.
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S02E12	(37)	"The Catwalk"
December 18, 2002
The Enterprise crew takes refuge in a nacelle to avoid an inescapable radiation belt.
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S02E13	(38)	"Dawn"
January 8, 2003
Trip is fired upon by an Arkonian ship and is stranded on a planet with his attacker.
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S02E14	(39)	"Stigma"
February 5, 2003
T'Pol learns she has Pa'nar Syndrome contracted from her mind meld in "Fusion" and must face being ostracized by Vulcan society and losing her position on Enterprise.
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S02E15	(40)	"Cease Fire"
February 12, 2003
Archer negotiates a cease fire between Andorians and Vulcans.
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S02E16	(41)	"Future Tense"
February 19, 2003
Enterprise finds a derelict ship only to be attacked by Suliban and Tholian ships.
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S02E17	(42)	"Canamar"
February 26, 2003
Mistaken as smugglers, Archer and Trip find themselves on a prisoner transport ship.
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S02E18	(43)	"The Crossing"
April 2, 2003
Incorporeal aliens attempt to take over Enterprise.
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S02E19	(44)	"Judgment"
April 9, 2003
Archer is arrested and imprisoned by the Klingons for allegedly conspiring against the Empire.
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S02E20	(45)	"Horizon"
April 16, 2003
After the death of his father, Travis visits his family on their cargo ship and begins to reconsider his place aboard Enterprise.
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S02E21	(46)	"The Breach"
April 23, 2003
Due to a militant faction's demands, Enterprise is asked to retrieve Denobulan geologists.
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S02E22	(47)	"Cogenitor"
April 30, 2003
Enterprise encounters the Vissians, a more technologically advanced species, and Trip finds himself transfixed on the fact the Vissians are a three-sexed species, befriending one of them with tragic results.
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S02E23	(48)	"Regeneration"
May 7, 2003
A group of Borg (from Star Trek: First Contact) are revived after a century frozen in Arctic ice.
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S02E24	(49)	"First Flight"
May 14, 2003
After hearing of the death of a close friend, Archer tells T'Pol about his early career as an experimental warp engine pilot.
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S02E25	(50)	"Bounty"
May 14, 2003
A Tellarite captures Archer in order to collect a reward from the Klingons who have been searching for the captain after the events of "Judgment". Meanwhile, a virus causes T'Pol to experience a premature pon farr.
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S02E26	(51)	"The Expanse"
May 21, 2003
An alien probe attacks Earth, killing 7 million people. Enterprise heads home for refitting before being sent into the Delphic Expanse in pursuit of the attackers. Meanwhile, T'Pol resigns her commission with the Vulcan High Command to stay aboard Enterprise. Trip also has trouble sleeping due to the loss of his sister, Elizabeth Tucker, in the alien attack on earth.
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SEASON THREE
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Low ratings encouraged the series' producers to seek a new direction. In analyzing past Trek movie successes, a storyline where the Earth was put in jeopardy was devised, as such a story had proven popular before, as in Star Trek: First Contact and Star Trek IV: The Voyage Home. The third season also sees the change of the series' name to Star Trek: Enterprise as well as an updated main title theme. Season three introduces the Xindi, an enemy bent on annihilating humanity via a planet-destroying super weapon similar to Star Wars' Death Star.

The third season follows a single story arc, beginning in the second season finale "The Expanse", in which a mysterious probe cuts a wide, deep trench from central Florida to Venezuela, killing seven million people. Enterprise is recalled and retrofitted as a warship, with more powerful weapons and a group of elite Military Assault Command Operations (MACOs). Enterprise travels through an area known as the Delphic Expanse to find the Xindi homeworld and prevent another attack against Earth. The crew learns in "Azati Prime" that the Sphere-Builders, a transdimensional species, have technology that allows them to examine alternate timelines. The Sphere-Builders know that in the 26th century, the "Federation" fleet, led by Enterprise's distant cousin, the Enterprise-J, will lead an attack against them that will defeat them. They wanted the Xindi, who revered them as "the Guardians," to destroy Earth in the hope that this would deter the formation and existence of the Federation. However, in the season finale, "Zero Hour," they manage to defeat the Sphere-Builders and destroy the Xindi weapon. They also succeeded in returning the Expanse to normal space. The season ends with the Enterprise being mysteriously transported into the middle of World War II. This plot was resolved in Storm Front, Part I&II.
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SEASON 3 EPISODES: 2003-2004
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S03E01	(52)	"The Xindi"
September 10, 2003
The mission against the Xindi starts off with Archer and Malcolm making a visit to a mining facility in order to track down a Xindi.
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S03E02	(53)	"Anomaly"
September 17, 2003
The crew of Enterprise encounters the anomalies of the Delphic Expanse first-hand and first learn of the giant spheres that seem to be behind its existence.
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S03E03	(54)	"Extinction"
September 24, 2003
During a wild goose chase while pursuing the Xindi, Archer, Malcolm and Hoshi are exposed to an alien virus and begin to mutate into members of a long-dead race called the Loque'eque.
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S03E04	(55)	"Rajiin"
October 1, 2003
A slave girl takes refuge aboard Enterprise but spies on the crew instead. Meanwhile, Archer learns that synthesized Trellium-D can be used to protect his vessel from the anomalies.
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S03E05	(56)	"Impulse"
October 8, 2003
Enterprise encounters a Vulcan ship in which the crew has become infected by a potent neurotoxin related to Trellium-D that causes permanent neural damage. T'Pol becomes infected and loses control of her emotions, becoming paranoid and nearly homicidal.
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S03E06	(57)	"Exile"
October 15, 2003
A Beauty and the Beast-like tale involving Hoshi encountering a telepathic exile (with Xindi-related information) on a deserted world.
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S03E07	(58)	"The Shipment"
October 29, 2003
The Enterprise crew learns of a shipment of kemocite, a key element in a new weapon being built to destroy Earth.
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S03E08	(59)	"Twilight"
November 5, 2003
An anomaly causes Archer to lose his long-term memory. Much of the episode takes place in an alternate future after the destruction of Earth in which Archer (with the help of his caretaker T'Pol and Captain Tucker) seeks a way to correct the past.
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S03E09	(60)	"North Star"
November 12, 2003
A planet resembling the American "Old West" is found to be inhabited by humans.
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S03E10	(61)	"Similitude"
November 19, 2003
Tucker becomes comatose after a plasma manifold explodes. A clone of Trip is created for the purpose of harvesting brain tissue. Archer's order to kill the clone is met with resistance when the clone, named Sim, becomes a member of the Enterprise family. Sim also reveals that Trip might be in love with T'pol.
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S03E11	(62)	"Carpenter Street"
November 26, 2003
With the help of Daniels, Archer and T'Pol go back in time after discovering a group of Xindi reptilians are creating a biological weapon in 2004 Detroit.
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S03E12	(63)	"Chosen Realm"
January 14, 2004
Religious zealots hijack Enterprise and seek to execute Archer for acts of desecration upon the spheres.
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S03E13	(64)	"Proving Ground"
January 21, 2004
Xindi scientists test their new, planet-killing weapon in an asteroid field as Archer finds he has an ally in the Delphic Expanse.
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S03E14	(65)	"Stratagem"
February 4, 2004
A Xindi ally helps Archer try to get information about the location of the new superweapon.
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S03E15	(66)	"Harbinger"
February 11, 2004
Enterprise encounters the Sphere Builders for the first time. T'Pol experiences unexpected emotions and initiates a relationship with Trip. Malcolm and Major Hayes come to terms with their differences.
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S03E16	(67)	"Doctor's Orders"
February 18, 2004
While Enterprise passes through a "trans-dimensional disturbance," the crew is put into hibernation, leaving Phlox in control of the ship. But is he truly alone?
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S03E17	(68)	"Hatchery"
February 25, 2004
Archer does everything he can to save a Xindi insectoid hatchery, to the point that his officers consider inciting mutiny against him.
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S03E18	(69)	"Azati Prime"
March 3, 2004
After finding the weapon on Azati Prime, Archer embarks on a suicide mission to destroy it. T'Pol suddenly goes into an emotional tailspin as Enterprise suffers a devastating attack by the reptilian Xindi.
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S03E19	(70)	"Damage"
April 21, 2004
Enterprise is heavily damaged by Xindi and seeks exchange of Trellium-D for a warp coil from an alien vessel but is forced to steal it. T'Pol confesses her addiction to liquefied Trellium-D, which has caused her to lose control of her emotions.
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S03E20	(71)	"The Forgotten"
April 28, 2004
Archer deals with the loss of many crew members and continues peaceful talks with two Xindi species that destroy a fellow Xindi ship in self-defense.
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S03E21	(72)	"E2"
May 5, 2004
The Enterprise crew meet their descendants from an alternate timeline.
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S03E22	(73)	"The Council"
May 12, 2004
Archer speaks at the Xindi council and finds one species has launched the superweapon in defiance of the council.
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S03E23	(74)	"Countdown"
May 19, 2004
Archer works to build support from the aquatic Xindi to stop the reptilians and find the Sphere Builders who are aiding the reptilians.
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S03E24	(75)	"Zero Hour"
May 26, 2004
The final showdown with the reptilian Xindi to stop the weapon from destroying Earth. Archer is lost and believed dead as Enterprise finds itself back in the Second World War era.	

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SEASON FOUR
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The show was renewed for a fourth season on May 20, 2004. The renewal moved the show from Wednesday night to Friday night, a move that seemed to replicate the third season renewal of the original Star Trek, when it was moved from Thursday night to the Friday night "death slot." Many cast and crew members supported it, saying that The X-Files gained more viewership during its first three years on Friday nights. As a sequel to "Zero Hour," "Storm Front" and "Storm Front, Part II," opened up the fourth season on October 8 and 15, 2004. The episodes ended the ongoing Temporal Cold War arc, which proved very unpopular among the show's viewers during the first three seasons. The Xindi arc, started over a year ago in "The Expanse," ended with the third episode, "Home," which mostly dealt with Captain Archer's ethically and morally questionable actions during the yearlong mission in the Expanse. The general theme of the season was a refocus on the prequel concept of the series, with many episodes making reference to themes, concepts, and characters from past series. The fourth season saw Brent Spiner (Data from Star Trek: The Next Generation) as the imprisoned scientist Dr. Arik Soong, an ancestor of Data's creator, in a three-episode arc at the end of which Soong abandons the concept of improving mankind in favor of creating artificial intelligence: an allusion to what will eventually become Data.

The Soong episodes later gave rise to a story arc where the Klingons were attempting to improve their species through the continuation of Soong's work. This allowed for an explanation of why the Klingons on The Original Series lacked brow ridges and were much more human looking than any of the other series.

Season 4 also addressed some discrepancies between the Vulcans of The Original Series and those depicted in Star Trek: Enterprise. In the Vulcan Civil War arc, Romulan subversion of the Vulcan High Command leads to a splinter group of Vulcans opposed to the High Command's actions, believing those actions to be against the teachings of Surak, the mythic leader who brought logic to Vulcan. After this storyline, Vulcans began a cultural transformation that was presumably a turn toward the more enlightened Vulcans of Trek series set further in the future. For example, mind-melding before the ancient teachings were recovered was considered immoral; after, it was embraced as the legacy of all Vulcans. A two-part return to the Mirror Universe, made popular by The Original Series and Deep Space Nine, titled "In a Mirror, Darkly," was made late in the fourth season, which take place in the parallel dimension (and to date they are the only ones to do so). These episodes use the Enterprise crew as the most barbaric members of the Terran Empire. As a sequel to the original Star Trek's "The Tholian Web," "Part I," proved popular while "Part II" had an ending which was a cliffhanger. Had the series gone on for a fifth season, the story would have continued. The story was "continued" by means of the first "Mirror Universe" anthology published in 2007 by Pocket Books. The story, "Age of the Empress" was crafted by Mike Sussman, the writer of "In a Mirror, Darkly."

Romulans also stir up trouble midway through the season. While a diplomatic conference is hosted by Earth on the planet Babel, Romulans, using drone ships with holographic emitters (mimicking any ship) stir up trouble with the Andorians and Tellarites. This places the two races at each other's throats, and when they're revealed to be Romulan, Archer devises an alliance, similar to the Federation, with the Vulcans. This three-part arc, which presaged the inevitable Romulan-Earth War of 2156, received the lowest Nielsen ratings of the entire series, leading UPN to cancel it on February 2, 2005.

In the final story arc of the season, a human terrorist group called Terra Prime, bent on removing all non-humans from human planets, genetically engineers a child from DNA samples of Commander Tucker and Commander T'Pol. They use the baby as a means to rile up humans who have become afraid of aliens since the Xindi conflict, and launch a campaign from Mars to drive the alien outsiders from human space. This storyline has been said by producers to represent how humanity must overcome its own bigotry and hatred in order to become the human race seen in later Treks.

The series cancellation was announced prior to the writing of the final episode of the fourth season, allowing the writers to craft a series finale. This final episode, titled "These Are the Voyages...", aired May 13, 2005 in the United States and was one of the most heavily criticized episodes of the Star Trek franchise. Much of the criticism focused on the premise, which essentially reduced the finale to a holodeck adventure from an earlier Star Trek series. This is why many of the cast consider the two-part "Demons" and "Terra Prime" to be the true finale of the series. The episode featured guest appearances by Jonathan Frakes and Marina Sirtis as their Star Trek: The Next Generation characters William Riker and Deanna Troi. The show took place during the TNG episode "The Pegasus". Brent Spiner lent his voice to the finale, and is briefly heard as Data.
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SEASON 4 EPISODES: 2004-2005
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S04E01	(76)	"Storm Front, Part I"
October 8, 2004
After destroying the Xindi weapon, Enterprise finds itself in the 20th century during World War II with Nazis in control of the North Eastern USA.
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S04E02	(77)	"Storm Front, Part II"
October 15, 2004
Archer joins Silik to stop the alien Nazis, restore the timeline and end the Temporal Cold War.
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S04E03	(78)	"Home"
October 22, 2004
Enterprise is welcomed home after saving Earth and the crew takes a much needed vacation. Tucker & T'Pol visit Vulcan where T'Pol must consider marriage to Koss. Erika Hernandez becomes captain of the Columbia and renews her acquaintance with Archer. Phlox encounters prejudice on Earth.
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S04E04	(79)	"Borderland"
October 29, 2004
Dr. Arik Soong restores his relationship with his genetically-enhanced "children," Augments.
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S04E05	(80)	"Cold Station 12"
November 5, 2004
A space station crew is held hostage as Dr. Arik Soong and his Augments work to obtain hundreds of Augment embryos in hopes of creating an Augment population.
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S04E06	(81)	"The Augments"
November 12, 2004
Dr. Arik Soong finds himself overthrown as "father" of the Augments and Archer rushes to prevent the destruction of a Klingon colony.
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S04E07	(82)	"The Forge"
November 19, 2004
Earth's embassy on Vulcan is partially destroyed by a bomb, killing Admiral Forrest. Archer & T'Pol travel to Vulcan in search of an alleged terrorist group blamed for the explosion, of which T'Pol's mother is a member.
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S04E08	(83)	"Awakening"
November 26, 2004
Archer & T'Pol find T'Pau and T'Pol's mother and learn that Archer is carrying Surak's katra.
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S04E09	(84)	"Kir'Shara"
December 3, 2004
Archer and T'Pol bring back the Kir'Shara (Surak's artifact) that will lead to vast changes in the Vulcan world. T'Pol's Pa'nar Syndrome is cured by T'Pau.
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S04E10	(85)	"Daedalus"
January 14, 2005
Dr. Emory Erickson, inventor of the transporter, conducts a long-range experiment in order to recover his lost son.
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S04E11	(86)	"Observer Effect"
January 21, 2005
Organians test the Enterprise crew by observing their reactions to a deadly silicon-based infection.
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S04E12	(87)	"Babel One"
January 28, 2005
Andorians threaten war on the Tellarites after apparently being attacked by a Tellarite vessel en route to trade talks.
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S04E13	(88)	"United"
February 4, 2005
Archer and Shran engage in mortal combat as Archer tries to unite the Andorians and Tellarites who are being set at each other's throats by a remote-controlled Romulan vessel.
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S04E14	(89)	"The Aenar"
February 11, 2005
The drone Romulan ship that attacked the Andorians is under the control of an Aenar, an offshoot race of the Andorians. Archer and Shran join forces to rescue the Aenar and stop the Romulan plot.
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S04E15	(90)	"Affliction"
February 18, 2005
Phlox is kidnapped by the Klingons who are seeking to cure a disease caused by an attempt to create Klingon/Augment hybrids; T'Pol's mental abilities grow exponentially after she conducts her first mind meld.
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S04E16	(91)	"Divergence"
February 25, 2005
With Columbia's help, the Enterprise crew grapples with sabotage to their ship as they pursue the truth behind the kidnapping of Phlox. The disease is cured, but genetic mutations will make many Klingons appear human-like for generations to come.
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S04E17	(92)	"Bound"
April 15, 2005
As a gift for negotiating with the Orion Syndicate, Archer receives three Orion Slave Girls, but these "gifts" have their own agenda. Meanwhile, Trip and T'Pol come to terms with the psychic bond that has been created between them.
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S04E18	(93)	"In a Mirror, Darkly, Part I"
April 22, 2005
In the Mirror Universe, Commander Archer mutinies against Captain Forrest in order to capture a future Earth ship found in Tholian space.
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S04E19	(94)	"In a Mirror, Darkly, Part II"
April 29, 2005
In the Mirror Universe, Archer commandeers the 23rd-century Defiant from the Tholians and uses it in a nefarious power grab.
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S04E20	(95)	"Demons"
May 6, 2005
A xenophobic faction of humanity threatens to undermine talks to form a new coalition of planets.
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S04E21	(96)	"Terra Prime"
May 13, 2005
A human isolationist leader threatens to destroy Starfleet Command unless all aliens leave Earth immediately. His bargaining tool: a baby cloned from DNA belonging to Trip and T'Pol.
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S04E22	(97)	"These Are the Voyages..."
May 13, 2005
Two centuries in the future, two crew members of the USS Enterprise (NCC-1701-D) observe a holodeck creation of the final voyage of the NX-01 in 2161 (six years after the events of "Terra Prime") as it returns to Earth for decommissioning and the signing of the United Federation of Planets charter.	
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MAIN CHARACTERS
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Jonathan Archer (Scott Bakula) — captain of Earth's first Warp 5 starship, Enterprise. His father designed its engine, giving Archer a very personal connection to his ship. Archer feels an immense amount of pressure concerning his mission, especially when hunting the Xindi to save Earth from destruction. Subsequently he is assigned Earth-local or diplomatic missions. Instrumental in founding the Federation.
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T'Pol (Jolene Blalock) — originally attached to the Enterprise by the Vulcan High Command to keep the humans out of trouble. Becomes very loyal to Archer, leaving her position in the High Command to accompany him, find the Xindi, and later join Starfleet. A version of T'Pol who was flung into the past gives birth to the first human/Vulcan hybrid. In later seasons, forms a romantic relationship with Trip. DNA stolen, along with Charles Tucker's, in order to make the first Vulcan/Human hybrid in the "normal" timeline, who unfortunately died from complications.
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Charles "Trip" Tucker III (Connor Trinneer) — chief engineer of the Enterprise, and long-time friend of Captain Archer. Started off conservatively modest, but becomes more seasoned as the series runs, losing a sister in the Xindi attack. In later seasons, forms a romantic relationship with T'Pol. DNA stolen, along with T'Pol's, in order to make the first Vulcan/Human hybrid in the "normal" timeline, who unfortunately died from complications. Was killed in the series finale based 10 years in the future saving the ship while it was under attack.
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Malcolm Reed (Dominic Keating) — armory officer of the Enterprise, also in charge of ship security. Reed comes from a long line of Royal Navy men, but joined Starfleet due to a fear of drowning. An extremely taciturn man, his own family did not know his favorite food when asked.
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Hoshi Sato (Linda Park) — communications officer and linguistic genius. Capable of learning alien languages extremely quickly, Hoshi serves as the translator between the Enterprise crew and new alien species, even after the Universal Translator is on-line. Suffered anxiety about her place on board originally, but exposure to frequent danger helped her realize her value to the ship.
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Travis Mayweather (Anthony Montgomery) — helmsman. A "Space Boomer", Travis is unique on Enterprise being born in space. Son of a freighter captain, Travis knows many of the alien species as well as locations that Earth traders frequent. As Enterprise moves farther and farther from Earth, his value in this area lessens, but his skill at the helm is constantly appreciated, making him the pilot of choice for many missions.
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Dr. Phlox (John Billingsley) — chief medical officer. A member of the Inter-Species Medical Exchange, Phlox is brought aboard the Enterprise to care for their Klingon passenger. Afterward, he volunteers to stay on, delighting in the experience of humanity taking its first steps into the larger galactic stage. An exceedingly cheerful alien, Dr. Phlox uses many animals and various naturalistic cures to practice his trade, instead of the usual technological implements. Devises a method of eradicating Borg nanoprobes, but because the method is fatal to humans and nearly so to Denobulans, it has little use.
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