Koryu heads to Yokohama in search of a woman named Birei, kidnapped by diamond smugglers who move their hot rocks by surgically implanting them into the nubile buttocks of Chinese prostitutes. Koryu's older sister, working as a jewelry designer, is secretly, if unhappily, involved with the gangsters.

Set in Shibuya in 1949, this is another film based on real life former yakuza boss Noboru Ando's memoirs.

With a Kansai syndicate setting their sights on Tokyo, a former yakuza boss gets dragged back into a world of violence.