Synopsis

Daiba Jin (Ikuta Toma), the ace of the Metropolitan Police Department’s First Investigation Division is nicknamed “Daimajin” as a pun due to his impressive strength. A passionate man, with a strong sense of justice, he resorts to strong-arm methods in order to punish criminals who have otherwise escaped being sentenced by the law. However, he harbors a dark secret; that he had killed a criminal who had escaped the law unpunished.
Senior Superintendent Hirayasu Saimon (Mukai Osamu) is a smart but cold, heartless man, who, after discovering Daiba’s past, uses this knowledge as leverage in order to coerce him into “working” for him.
Because of this, Daiba is transferred to a special task force led by Hirayasu. Under his command, he must secretly dispose of criminals who the police are incapable of arresting. However, by doing so, he finds himself venturing into a dark side of the police organization and the state, one which should never be messed with…