Driving back from his mother's funeral, homicide detective Gun-soo runs over a man in a dark rural street. In a moment of desperation, he dumps the body in a coffin alongside his mother. A few days later, Gun-soo flips through a listing of open cases and finds his accident victim. His colleague is on the accident case and is slowly making progress. Making matters worse, a witness steps forward, a detective named Park. For a reason unclear to Gun-soo,...