Synopsis: Young Aoshima (Oda Yuji) passed his exam of becoming a detektiv seargent and gets assigned in a local police station. He worked several years as a salesman and wanted to leave the hirarchic structures of japanese companies behind him. So his dissappoinment is big, when he notices, that a police station works the same as a company, with rivaling stations, much bureaucracy and contemptous co-workers.
During the single cases which have to be investigated together with the main police station, a mutual trust arises between Aoshima and superintendend Muroi (Yanagiba Toshio). Aoshima also learns much from his older colleague Waku (Ikariya Chosuke), who only has to work 3 months until his retirement. Often he also works together with Onda (Fukatsu Eri) from the burglary departement.
The humour in this series is provided by the three superiors of the police station, who attack the old and hirarchical structures through their funny behaviour.