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.

Meiko Kaji reprises her role as Nami, a vengeful female gang leader, in the second installment of this high-action series that casts a new actor — martial arts legend Sonny Chiba — in the role of Nami's loyal friend Ryuji. This time around, Nami is looking for Hoshiden, the man who murdered her father and shattered her once-hopeful childhood. But living under an assumed name, Hoshiden could stay hidden forever.