Masami and Kasamatsu are passionately seeking each other in an apartment in a corner of the downtown area along the Sumida River. They had an affair. They declared divorce to their respective spouses and began living in this apartment in search of a love nest just for the two of them. However, there was no way that her new life after being unfaithful would go well from the beginning...

A young wife, not satisfied with her ordinary married life with her husband, decides to take on an adventure with a young man. She is supposed to enjoy a fleeting adventure, but she discovers for the first time the joy of sex that her husband can never experience, and completely forgives her body and mind. The fate of a woman who falls into the sweet "trap" of a devilish man who owes her a large sum of money, and whose life continues to escalate as he tries to collect her loan money...

When a poor student can’t pay his bill at a snack bar a mysterious woman pays it for him. She ends up taking a room at the boarding house where he lives. With her lively personality she becomes erotically involved with all the residents living there and helps with their various sexual problems.