After being kidnapped and imprisoned for fifteen years, Oh Dae-Su is released, only to find that he must find his captor in five days.

A high school student with amnesia tries to uncover what has happened to her. All leading her into deeper troubles ultimately revealing a darkness she could not have imagined.

A determined homicide detective assigned to take down a ring of serial killers, who has a personal motivation as one of the victims is his own brother-in-law.