Jee-woon Kim, and stars Byung-hun Lee, Min-sik Choi, and In-seo Kim.
Right after his fiance is killed by a serial killer, Secret NIS agent Soo-hyun decides to take revenge and starts looking for the assassin. As Soo-hyun tells his father-in-law about his plans, the old man, a retired chief police officer, provides him with the pictures and profiles of the four main suspects. Some time after, Soo-hyun finds the first guy and after beating him pretty badly, he decides to turn it to the police. However, the second guy, Kyung-chul, turns up to be the killer so Soo-hyun decides to "play" a little with him and after a very violent beat-up he tells him that his vengeance is just starting.