Reiko Takami is a housewife living with her husband and son. Her son, Manabu, was recently fired from his job and is currently struggling through unemployment, feeling depressed and listless. Wanting to cheer him up, Reiko starts spending more time talking with him. Gradually, Manabu begins acting more affectionate than usual, clinging to her, hugging her tightly, and begging for kisses. Thinking it might help lift his spirits, Reiko kisses him—and that sparks an intense physical desire in Manabu. He starts passionately pursuing his mother’s body, and their relationship quickly escalates into forbidden intimacy.