After several years of marriage, Nao finds herself in a dull marital life. To escape the monotony, she decides to get an outcall massage for a change of pace. However, Nao's body, which had never been fully satisfied, becomes restless under the skilled treatment of the masseur, Oshima. A few days later, noticing Nao's hidden masochistic tendencies, Oshima tells her about a more stimulating massage and ties her up with hemp rope. Nao's body, now bound like it's caught in a spider's web and deprived of freedom, ironically begins to drip with arousal...
