The story about two men who were victims of school violence 20 years ago. Among them, one becomes a serial killer to punish the evil. Ironically, the other becomes a police officer, who put his life to catch the killer.
- Kim Dong Wook as Hwang Kyung Min
- Kim Sung Gyu as Jung Jong Seok
- Chae Jung An as Kang Jin Ah
- Hwang Man Ik as Park Sung Jin
No. Of Episodes – 12
Watch On – Prime Video