Chae Yeon-hee

A psychopath's ruthless serial murders have left the entire nation gripped by fear and chaos. An honest, justice-seeking rookie police officer and a veteran detective with a tragic past, face off against the killer. After their encounter with the psychopath, their lives change completely.

A homicide squad detective, suspected of serial murder, searches for the real culprit.

Ji Eun doesn't want her beloved Yoon Ji to leave.