For four years since their marriage, she has lived as the proud wife of a successful company president. But sensing her husband's emotional detachment, she quietly harbors despair deep inside. On this journey, she sets out to seek an affair. Arriving at a hot spring inn, she calmly undresses and follows a man's invitation to an outdoor bath. Filled with pent-up frustration toward her husband, she recklessly surrenders herself to the man. She opens up about the reasons for this trip, confessing her inner feelings of self-destruction. With each encounter, she fully embraces pleasure, her face and chest flushing red as she reaches climax after climax. Her heart and body tremble along the soothing flow of the hot spring, lost in the throes of forbidden love. By the end of this journey, a new emotion begins to stir within her.