One day, Yoko, a housewife struggling with infertility, is informed by her husband that her neighbor is a chiropractor specializing in infertility treatment. Urged by her parents, Yoko follows his advice and accepts the treatment. As her sexual sensitivity is developed by the skilled obscene techniques, Yoko's body is gradually brought out as her sexual instincts are brought out. Her natural eroticism blossoms as she experiences pleasure that she cannot experience with her husband, but...