When 150 guns are stolen from Iwakuni base and two police officers are shot dead, a detective criminal tries to find out the truth.

The story is presented as a voiced-over narrative by Arita (Takahiro Tamura), speaking long after the events of the film. In a remote army base in Manchuria, near the Soviet border, long-serving corporal Arita hates the military and looks forward to the day he may leave. Although a university graduate, he has several times deliberately failed the exam for promotion and thus remains a corporal after four years' service.

Yumi, an exceptionally beautiful call girl, has a close call with death when a client forces her to die with him. An old cop pities her and agrees to be her guarantor so that she could join a Nishijin weaver workshop. Yumi wishes to put her dark past behind her, but she's exposed by an ex-client. Despite the unwavered support of the old cop, she sees no way out and uses her seductive body again to get what she wants. Hiroyuki, her co-worker at the weaver workshop, is a pure-hearted young man who may redeem Yumi from her deadly path as a femme fatale.