優しい夫と何不自由ない結婚生活を送る七緒。ただ、七緒には1つ不満があった。それは下品でデリカシーのない義父との同居。セクハラが日常茶飯事の義父との生活に嫌気が差していた。ある日、夫のいない時間に寝落ちしてしまった七緒を見つけた義父。息子の留守をいい事に、こっそり下着をずらして雌と汗の匂いの混ざった性器を貪り、肉棒で突き立てる容赦ない中出しレ×プ。それからも七緒は隙を見て襲ってくる義父に若い肉体を汚され続ける…。

Nanao enjoys a comfortable married life with her kind husband. However, she has one complaint: living with her vulgar and insensitive father-in-law. She is fed up with living with him, as sexual harassment is a daily occurrence. One day, her father-in-law finds Nanao asleep while her husband is out. Taking advantage of his son's absence, he secretly pulls down her underwear, devours her genitals, which smell of female fluids and sweat, and mercilessly s her, thrusting his penis inside her. From then on, Nanao's young body continues to be defiled by her father-in-law, who attacks her whenever she has a chance…