Red vs. Blue: MIA is a six-part mini-series that celebrates the release of Halo: Combat Evolved Anniversary. The story chronicles the misadventures of the Red and Blue teams searching for Grif while inside the Epsilon Unit. It takes place somewhere in between the beginning and end of Season 9. The series was first announced at Halo Fest and the first episode was released on Halo: Waypoint on November 13, 2011.