The 1930s, when Korea was under Japanese rule, Lee Jung-chool, a Korean police captain in the Japanese authorities, is given a special mission to infiltrate the armed resistance fighting for Korean independence. He approaches Kim Woo-jin, a leader of the resistance. The two men who stand on opposite sides of their historical era, each knowing the identity and intentions of the other, become close without revealing their inner thoughts. Typically fantastic and visually striking, Kim Jee-woon’s espionage thriller achieved remarkable box office success in the local market.