Ogawa plays a female cop who is also a rape victim. Kumiko is handcuffed
and sexually assaulted by an unknown assailant during her nightly patrol.
The policewoman doesn't report the rape, but rather conducts her own
investigation. Days pass and she learns nothing. Then, one evening,
she is attacked and ravaged in the police station restroom by - presumably
- the same man. Kumiko begins to think and act like a victim, expecting
the rapist will show up again.
Hasebe unspools his story against protocol. The movie never reveals
the identity of the rapist. The film ends with speculation as to who
it might be [perhaps a resentful victim of a past arrest, maybe a former
boyfriend, possibly a fellow police officer] forcing Kumiko to live
in constant fear. Obviously, the unsettling denouement generates more
tension than the standard thriller, as the viewer can't shake the feeling
that the story hasn't ended at all.