A yakuza movie starring Koji Matoba, depicting the lives of men left behind in the times. At the Yokohama-based Ninkyo Yamaguchi-gumi, the drug business is legal according to the teachings of the leader, Engetsu. Mouri of the Ryuyasu group assassinates the leader of the Yamagami group, a hostile organization that trades drugs, according to the teachings of Engetsu, but this causes a conflict with the neutrals in the group.