AV director Koichi Takahashi, who calls himself "the married woman's lover of the heart," invites his wife's female friend to his home with lewd intentions. There's no way a married woman who spends a night alone with him would remain untouched... Yayoi, 29 years old, married for 7 years, no children, works at a travel agency. When she tried to take a shower in the empty room she rented for one night... she comes face to face with the returning landlord completely naked. After spending the night together and becoming friendly after a meal, she asks the AV director for advice on reviving her married life. She is persuaded that this is a chance for a married woman who only knows her husband to try another man's dick and is inserted. She shakes her hips in the cowgirl position and orgasms. She even experiences a vibrator. In the morning, the married woman who wanted another man's dick is thrust from behind and moans and gasps.