Despite a stranger's warning about meddling, Ha Ram tries to track down a serial murderer -- even though an investigation is already underway.

As the detectives gather details about the psychopathic killer who's shaking up the country, Black continues his frantic search for Ha Ram.

Black hurries back to the site of Ha Ram's disappearance. Crazy Dog gets hold of what appears to be a safe key belonging to Man Soo's father.