A yakuza movie starring Koji Matoba, depicting the lives of men left behind in the times. In the Ryuan-gumi, which is based in Yokohama, drug business was prohibited by the leader Engetsu. One day, in order to protect leader's teachings, Mouri of the Ryuan-gumi assassinates the leader of the Yamagami group, a hostile organization that trades drugs. This causes a conflict with the neutrals in the Ryuan-gumi. During this turbulent time, the leader Engetsu asks Mouri to take care of his son Saiga and guide him on the path to becoming a yakuza.

A year later, Mouri was demoted, and Saiga was expelled from the gang. Engetsu suddenly fell ill, and in Yokohama, where Engetsu's influence waned, drugs began to spread. Amid the unrest, Mouri and Saiga begin to confront each other.