Saeko is abnormally attached to her older sister, Yumi. When Yumi becomes engaged to Arikawa, Saeko schemes to separate the two. She seduces Arikawa who then becomes confused over his attraction to both sisters.

Set in a Shinjuku bathhouse brothel, the film uncovers the sexual eccentricities of everyday people. Focusing on three female sex workers, the colorful, unpredictable look into the hidden underbelly of Japanese nightlife is playful but also unafraid to explore the darker sides of the business. The fleeting nature of relationships in such an environment and the consequences of toying with feelings are presented with a melancholy tinge.

A documentary compilation that shows various clips from the Roman Porno series of movies from 1971 to 1988.