On the day of her son's funeral, Yukiko is raped by her uncle in front of the urn, and her son's friend, who witnesses the scene up close, begins blackmailing her. Gradually, he takes control of her using aphrodisiac drugs, and her body slowly succumbs to his command, wracked with pain. Unable to fulfill her role as a mother in the days following her son's death, her mind and body progressively break down. In the end, she transforms into a being who obediently follows the boy's commands.