Kanako Maeda witnesses her son masturbating with her underwear. Realizing that things can't continue like this, she decides to give her innocent son a sex education. However, things escalate to an extreme degree, and before long, Kanako is using her pussy to take her son's virginity. She is instantly hooked on the young, perky male organ. Before she knows it, she begins to desire her son herself, and goes crazy with incestuous creampie sex...