The years as a student often have the most wonderful memories in the classroom. The boy in the movie is no different, but the difference is that this memorable moment takes place at his best friend's house with his mother, not in the classroom. Arisawa is a young, promiscuous mother; even though she is married, it seems that is still not enough for this ambitious woman. When her son's friend comes to visit, it becomes a great opportunity for her, continuously unleashing tricks to arouse the inexperienced young boy, while he innocently waits for a moment when his friend is not paying attention before starting to sneak in some intimacy. The movie doesn't stop there, as there are two more parts featuring beautiful actresses, but generally, the content is quite similar to the first one.