Yuzuru joins a private gym at a friend's suggestion and gradually becomes attracted to his trainer Yuki. One day he sees her enter a suspicious building and secretly follows, only to discover her captivating an audience with a sensual dance as a stripper. Stunned yet unable to resist her obscene elegance, he becomes obsessed. When they meet again at the gym, Yuki whispers that she will give him special service if he comes back to the theater.