Saki, a busty married woman, injures her leg during a mothers' volleyball match and, on her husband's advice, begins visiting a chiropractic clinic. At first, she feels uncomfortable with the suggestive way the therapist presses on her breasts and buttocks, but she endures it, believing it's for her body's sake. During her second session, however, the treatment crosses the line—her groin area is slowly and teasingly massaged, building unbearable tension. The sensation reawakens a pleasure she hasn't felt in years, gradually heating her body. Drawn to this entirely new experience, she resolves to keep visiting the clinic, leaving her husband at home. Her mature body can no longer resist the seductive treatments.