Postwar Hiroshima is nothing short of a nightmare, with various factions of the infamous Yakuza mob vying for dominance. Enterprising and highly moral Shozo Hirono (Bunta Sugawara) thinks to reach the top by starting a new crime family built around Boss Yamamori (Nobuo Kaneko). Problems arise, however, when a dispute with a rival gang finds Shozo warring against his best friend from prison, Hiroshi (Tatsuo Umemiya). Shozo sides with Hiroshi, only to find that his friend isn't as loyal.