Formerly a professional kickboxer, the wife of Amemiya, the president of a construction company who was recently arrested for the corruption of a general computer, sent an investigation request to Washizu (Satoru Sayama) of the Roppongi Imoarai-zaka secret detective agency. She wanted me to look for a note about corruption left by her husband. The investigation was Washizu, who focused on two women and started to move, but the incident started to go in an unexpected direction ...

The fifth installment of the Gokudo Action Series, which depicts the process of the yakuza organization walking on the path to national domination, centered on the confrontation between the two gangsters who became their nemesis. This work is set in a certain area of ​​Hiroshima, which is shaken by the construction problem of an industrial waste treatment plant.