In this adult sister role-play, Mei visits Tokyo for the first time and stays with her younger sister Mai because she knows nothing about the city. They had always been close and trusted each other—until Mai was corrupted by life in Tokyo. Young women are exploited there, and this naïve country woman is no exception. Sold into filmed prostitution with middle-aged men, Mei gradually awakens to the pleasure of breeding sex. It is a frightening city, capable of transforming someone so innocent beyond recognition.