Shadow Detective plot
Taek-rok, an elderly detective about to retire, receives a threatening phone call from an unknown man and is falsely accused of murder. The blackmailer calls himself a friend and wants to play a game. He orders Taek-rok to look into the cases he has been running. The old detective desperately digs into his past for the blackmailer and discovers what he is up to. Can Taek-rok complete the game?