Nana has remarried her current husband, but has no physical connection and is living frustrated days. Although it is awkward with his son-in-law, Makoto, he is upset by the semen attached to his underwear as the conversation gradually increases. While helping Makoto with no sexual processing knowledge with handjobs and blowjobs, he is fascinated by the breasts of his mother-in-law, Nana, and gradually wants a relationship more than parent and child. Forbidden sex, but Nana can't control her burning body ...!