A woman named Yui lives with her only son, Takahide, while waiting for her husband who is on a business trip. Unable to settle the restlessness of living apart from her husband for over three months, she naturally finds herself touching herself... She then lures in her son's friend, Tomoma, and molds him into someone to her liking to release her pent-up sexual desires. However, mere lust was not enough to satisfy her. One day, Yui catches a glimpse of Takahide's penis and cannot hide her excitement over her virgin son's impressive manhood...
