During the violent chaos of post-War Japanese black market, a young gangster called Shozo Hirono has to keep up with the rapid shifts of power between unscrupulous bosses.

Acting boss Hirotani of the Ohara gang uses his friendship with corrupt cop Kuno to usurp a staged land deal that rival yakuza gang Kawade had arranged through local politicians. Open warfare erupts between the two gangs.

Bunta Sugawara is Miyoshi, a low-level assassin of the Yamamori gang who is sent to jail after a bungled hit. While in stir, family member Aoki attempts to seize power from the boss, and ...