University student Soa, who started a happy cohabitation with her sincere boyfriend Yusuke, hurts her waist during moving. At Yusuke's suggestion, she calls dispatched masseur Nakahara, but he is a perverted practitioner who drowns female clients in pleasure. With skillful hands, he persistently teases her, gradually dominating her body and mind. She, who was supposed to be pure, becomes his captive, lying to her kind boyfriend while indulging in forbidden pleasure.