IRIS (2009)

Kim Hyun Joon (Byung-hun Lee) is an assassin who belongs to a top secret organization known as the "NSS" whereas T.O.P (Seung-hyeon Choi) is an assassin who works in another secret organization located in the United States called "IRIS" and was ordered to kill Kim Hyun Joon. Lee Myung Hee (Tae-hee Kim) is a psychological analyst who plays an important role in bring Kim Hyun Joon into the "NSS."