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

A fateful accident intertwines six lives in a thrilling tale of karma and crime, where each must face their own dark truths and connections.

A mermaid from the Joseon period ends up in present-day Seoul, where she crosses paths with a swindler who may have ties to someone from her past.

A story that follows the lives of four female friends in their 30's as they become involved in a series of murders.

A fiercely competitive police officer and an idealistic prosecutor, former high school classmates, reunite while investigating a nationwide serial murder case, pulling them into both a dangerous pursuit and an unresolved personal past.