The time is the 1980s . Japan 's organized violence achieved national unification through numerous fierce conflicts, collusion with the political and business world, and collusion with overseas mafia , forming a huge organization " Japan Mafia ". The whole of Japan has become a lawless zone dominated by crime and violence. In order to deal with this situation, the National Police Agency overcame the old-fashioned sectionalism of the National Police Agency and challenged the Japan Mafia directly. Secretly organized as the key to this is a special command team consisting of a small number of elite people who have been entrusted with force and authority far beyond the conventional police. The mafia and others were frightened by the nickname " Mad Police ," a ruthless investigation that transcended the law . Until the time when the Japan Mafia is destroyed, the days of fierce battles in Mad Police will continue endlessly.

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