IMDB:  
http://www.imdb.com/title/tt4914580 

Director: Jee-woon Kim 

Writer: Jee-woon Kim 

Stars: Byung-hun Lee, Yoo Gong, Kang-ho Song 

Plot: Set in the late 1920s, The Age of Shadows follows the cat-and-mouse game that unfolds between a group of resistance fighters trying to bring in explosives from Shanghai to destroy key Japanese facilities in Seoul, and Japanese agents trying to stop them. A talented Korean-born Japanese police officer, who was previously in the independence movement himself, is thrown into a dilemma between the demands of his reality and the instinct to support a greater cause