Nao, a married woman, has been married for several years and has a cold married life. In an attempt to escape from her boring daily life, she decides to get a massage service from a visiting massage therapist. However, Nao's body, which has never been satisfied, is tormented by the skillful massage of the shiatsu therapist Oshima. A few days later, Oshima realizes Nao's hidden masochism and ties Nao up with hemp rope, saying he wants a more stimulating massage. Nao's body, which is deprived of freedom as if entangled in a spider's web, ironically drips with love juice...