Rei Kimura, a full-time housewife, has been married to her husband, Yuji, for two years. They were living happily together until she hit her lower back hard while doing housework. At her husband's suggestion, she calls in a dispatched masseuse, Maeda, to receive treatment. Maeda is affable, but he seductively attacks Rei's body under the pretext of treatment. At first, Rei accepts the treatment, saying it will help alleviate the pain in her lower back, but she is unable to resist the teasing massage using powder and oil, and gradually her mind and body are taken over by pleasure. Eventually, Rei shows an expression she would never show to her husband, and is brought to multiple climaxes by Maeda's hands, tongue, and penis.