On the day Eriko Takikawa turned 45, she had dinner with her two sons. The older brother, who had lost his appetite, suddenly said something strange. With her husband away on a business trip, Eriko was busy taking care of her sick sons. When one son, running a fever, suddenly demanded to see his mother's body, she reluctantly agreed. Unbeknownst to her, the other son secretly watched the scene. The younger son's fantasies about his mother gradually intensified, eventually spiraling completely out of control.