Accepting a request from a sadistic lady of leisure to find a woman to serve as a human toilet, Chie (Kohayakawa) sets her sights on Mariko (Hazuki), the only daughter of a wealthy family. Infiltrating as a servant, Chie's scheme results in Mariko being kidnapped and imprisoned, raped by a masked man, and forced to perform lesbian services for Chie while being trained into a human toilet...
