Erena Takimoto lives alone with her son while her husband is away on a work assignment. One day, her son tells her he has a girlfriend, sparking intense jealousy in Erena. Overcome with emotion, she loses control and takes her son's virginity. Experiencing pleasure for the first time, the son gradually falls under his mother's sexual dominance, eventually abandoning his girlfriend and becoming completely dependent on their illicit relationship. This intense story portrays Erena's passion and her son's transformation.