It was supposed to be a pleasant drinking party with her husband's subordinate. When Saki wakes, wondering if she drank too much, she finds her body tightly bound. Realizing who did it comes too late, and her husband appears to have been drugged asleep, unable to hear her calls for help. Immobilized, she is forced to surrender her body. From that night on, her days of yielding to the pleasure of hemp rope begin.