Ayaka, a renowned beauty and widowed mother, lives a quiet life with her only son, Kazuo. One day, the neighborhood association chairman visits to deliver an invitation to a local event. However, due to work conflicts, she explains she won't be able to attend, prompting the chairman to react with irritation, saying, "It's troublesome when you never participate." He also reprimands her for falling behind on her neighborhood dues. Distressed, Ayaka decides to check on something in the room, but suddenly hears a strange noise from the kitchen. Anxious, she asks the chairman to inspect the room with her. Yet, the two of them end up alone together. Seizing the opportunity, the chairman begins to pressure Ayaka, escalating his advances. Just as the situation intensifies, Kazuo unexpectedly returns home. In that instant, the story takes a sudden turn, spiraling into shocking new developments.