As Japan gears up for the 1964 Olympic games, the cops start to crack down under pressure from the public and the press, adding a new dimension in the war for power among the yakuza families of Hiroshima. Takeda (Akira Kobayashi) tries to keep a lid on things, but hotheaded underlings create chaos, with one boss whacked in neutral territory and the craven boss, Uchimoto, informing on an assassination attempt by his own minions. While the police round up hundreds of yakuza foot soldiers, Shozo Hirono (Bunta Sugawara) plots to finally take out longtime nemesis, boss Yamamori.
Conflicts between Hirono's family and Yamamori's family (and their allies) are made more tense by the ambitious underlings and the police's efforts to impose a crackdown on the gangs.