優しく頼りになる夫と不自由ない結婚生活を送る有紀。ただ、有紀には1つ不満があった。それは下品な義父との同居。突然家に転がり込んできて居座る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有紀を見つけた義父は息子が居ないのをいい事に、下着をずらして雌と汗の匂いの混ざった性器を貪る。肉棒で突き立てる容赦ない中出しレ×プ。それからも有紀は隙を見て襲ってくる義父に若く引き締まった肉体を汚され続ける…。

Yuki enjoys a comfortable married life with her kind and reliable husband. However, Yuki has one complaint: living with her vulgar father-in-law. She's grown tired of living with him, who suddenly moved into their house and has made himself a regular. One day, while her husband is out, her father-in-law finds Yuki asleep and, taking advantage of his son's absence, pulls down her underwear and devours her genitals, which smell of female fluids and sweat. He mercilessly s her, thrusting his penis inside her. From then on, Yuki's young, toned body continues to be defiled by her father-in-law, who attacks her whenever he gets the chance…