Yuki Sakurai lives alone with her only son, who suffers from a chronic illness. One day, she discovers that the home care nurse tending to her son has begun a sexual relationship with him. Torn not only as a mother but also as a woman, her emotions begin to unravel. That night, Yuki visits her son's room and confesses her true feelings. As the intense drama unfolds, scenes depict the voluptuous mother's body writhing passionately. The story delves into the deepening, taboo relationship between mother, son, and the nurse, delivering a gripping and emotionally charged narrative.