A monkey told by a detective that he will be arrested on suspicion of continuous theft of a shopping street. The monkey escapes with Minami, who is thought to be an accomplice, and vows to catch the true criminal who made them the criminal. Then, the monkey sets a trap in the shopping district and tries to catch the criminal. However, the criminal cuts Minami and runs away. The monkey asks Mishima, who is familiar with the dark route, to search for a person who has sold art in a flashy manner. The monkey asks Yamamoto and Ritsuko to cooperate in arresting the criminal, tells him that he is suspicious of Minami, and invades the mansion.
