A married woman named Chinamin lives together with her beloved husband and his father-in-law. However, one afternoon... she gets caught masturbating by her father-in-law, leading to him forcing himself onto her. Unlike her indifferent and clumsy husband, this experienced man knows how to please her both roughly and skillfully. As they indulge in passionate sex, the wife finds herself being repeatedly penetrated and filled with pleasure. Eventually, the once virtuous housewife becomes so consumed by lust that there's no going back to her innocent days...

大好きな夫とその義父と3人で暮らしていた人妻「ちなみん」。しかし、ある昼下がり…、義父に自慰しているところを見られ、そのまま襲われてしまう。淡泊で下手な旦那とは違う荒々しくも巧みなテクとSEXに溺れていく肉感妻。何度も犯●れイカされまくる日々…やがて人妻は自ら絶倫棒をねだり種付けFUCKでイキ狂う。快楽を脳と身体に刻み込まれた人妻は貞淑だったころには二度と戻れない…！