Jiro and Kai have finally started their on-site training! They are dispatched to South Kanagawa Koban (neighborhood police station) and… immediately put into a room to do nothing. Unbeknownst to them, Yanagida had called ahead and told the police officers to keep a tight watch on Jiro and Kai! However, of course, the two troublemakers find a way out of there and in the middle of another tricky case.