A detective tries to outwit a jewel thief who has kidnapped the daughter of a jeweler to get to an exquisite diamond.

Police investigators investigate the link between a serial killer's machinations and a teenage boy who committed suicide.

Though he has come from a rough background on the streets, Muraki quickly rises through the ranks by means of his well-honed blackmailing instincts. Desperate to keep rolling with his freewheeling lifestyle, Muraki sees his luck begin to crumble when he sets his sights on the business partners of a powerful gang boss.