Two inmates are simultaneously released from jail, but go their separate ways, only to cross paths again in the nearest brothel. There they make the acquaintance of a would-be prostitute. They help her escape and decide to guide her on her quest for sunken contraband somewhere off the coast.

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.

A detective is charged with investigating a bank corruption scandal.