The impotent husband can't get an erection even when his wife Miori gives him a blowjob or shows him how to masturbate. He tries his best to satisfy his wife with a vibrator and fingering, but Miori is not satisfied with toys and approaches her stepson, exploding with frustration with a deep kiss and oral sex, swallowing his semen! A secret physical relationship begins, and Miori straddles her son and swings her hips in yoga. The husband appears in front of the two as they enjoy their incestuous act, and gets a full erection when he sees his wife being seduced by his son! The father and son's dicks penetrate Miori, and she climaxes with two consecutive facials!!