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.

Cast:Kim Dong-wook, Kim Sung-kyu, Chae Jung-an, Choi Hyeon-jin, Han Soo-yeon, Lee Ji-ha,

Genre:Drama, Mystery,

country:South Korea,

Production:Studio Dragon, Hidden Sequence,