Plot

Two elite National Security System (NSS) agents, Hyeong-Jun (Lee Byung-Hun) and Sa-Woo (Jeong Jun-Ho), who were sworn blood brothers, both fall for fellow agent Seung-Hee (Kim Tae-Hee). Sa-Woo attempts to suppress his feelings for Seung-Hee and wishes the couple the best.

Hyeon-Jun is then sent off on a solo mission to Hungary. In Hungary, Hyeon-jun accomplishes his mission and while in escape mode becomes wounded. Shortly later, Hyeon-jun finds out that he was betrayed by fellow agent Sa-woo. Seung-Hee attempts to help Hyeon-Jun escape, but a car explosion separates the two and both are misled to believe that the other person are dead. Hyeon-Jun is then saved by an unknown voice and learns of the secret society "IRIS".

One year later, Hyeon-Jun returns to Korea to seek revenge. During this time, the two Koreas are set to reunify, while the group "IRIS" are intent on stopping the reunification.

Cast

• Lee Byung-Hun as Kim Hyeon-Jun
• Kim Tae-Hee as Choi Seung-Hee
• Jeong Jun-Ho as Jin Sa-Woo
• Kim So-Yeon as Kim Sun-Hwa
• Kim Seung-Woo as Park Cheol-Yeong
• Kim Young-Chul as Baek San
• Yun Ju-Sang as Oh Hyeon-Kyu
• T.O.P as Vick

Trailer