Sato is chasing a murderer through the school building where the Detective Boys are in. After cornering him, she accidentally handcuffs him to her between a toilet handle, trapping them. The man proclaims he is innocent and that needs to get on a plane tomorrow to attend his daughter's wedding. She tells Takagi to solve the case before the time and not to inform the police. The Tokyo police department send out a massive manhunt for the suspect, Sato, and Takagi.