At the Kanagawa police precinct, Inspector Keita Kurokôchi is a textbook dirty cop. Having a position at the second division of the precinct tasked with investigating organized and white-collar crimes, Kurokôchi knows every local politician's little secrets and their bribes allow him to live in luxury. On the contrary, Chief Inspector Shingo Seike is a naïve newcomer at the precinct full of idealism.