Her husband is away on a long business trip, and Ai and her son spend their days together peacefully. Recently, her son Kazuya, who has few friends, brings his classmate Sho home, and Ai is happy about it. However, Sho, who is starved for his mother's love in a single-parent household, shows a strange attachment to Ai and closes the distance between them. He takes advantage of this opportunity to push Ai down. Her womanly parts, which have not been touched for a long time, become hot and moist, and a pleasure that penetrates her head dominates her. Unable to forget the strong pleasure that penetrates her, she begins to become addicted to her acts with Sho.