Oh-Hyun is a young guy who is a hired killer, working for an influential criminal group. He always brings the case to the end and never being torments of conscience, because for him it's just a job. The next order of his boss, who always pays good money, he becomes a murder of a young schoolgirl, and o-Hyung as always impeccably performs its work. However, he then falls into the hands of unknown to him, dressed in military uniforms, who begin to torture him, trying to learn the name of those who ordered the girl. In addition to on-Hena under suspicion to fall a few more people, and violent the Avengers will not rest until each and every one of them will be punished.