is a 1969 Japanese yakuza film directed by Kinji Fukasaku. Based on real events, the film was a success and spawned three sequels.

Plot

The Danno Organization, Japan's largest yakuza family, expands outward from its base in Osaka during the post-war period under the leadership of Boss Danno and Chief Executive Tsubaki, the family's ruthless captain. In Yokohama, the boss of the Hamanaka Family pledges fealty to the Danno Organization. In order to block Boss Danno's progress, the yakuza families of Tokyo form the Tokyo Alliance, appointing Boss Yato as chairman. The Alliance uses the Sakurada Family, the dominant family in Yokohama, to attack the Hamanaka Family in a proxy war between their forces and those of the Danno Organization.