Two friends in the past were victims of serious school bulling. One could not resist his trauma, and becomes a serial killer, walking in the path of revenge. Another one tries his best to overcome the trauma and becomes a police detective. He now faces tragic fate to risk his life to capture the serial killer.

Kim Dong-wook, Kim Sung-kyu, Chae Jung-an, Choi Hyeon-jin, Han Soo-yeon, Lee Ji-ha, Jung Eui-jae, Oh Min-seok, Hwang Man-ik, Ji Chan, Song Seung-hwan, Lee Dong-jin, Kim Poo Reum