A married woman in her third year of marriage, living with her husband's father due to his frequent business trips leaving him absent most of the time. Despite their busy schedules, they have little quality time together which has led to the wife feeling sexually frustrated. One day, while masturbating, she is caught by her perverted father-in-law who watches her every move with a smirk on his face. Things take an unexpected turn when the delivery man she was cheating with arrives at their home. After having sex with him, she is once again discovered by her father-in-law who now uses what he saw as leverage to demand sexual favors from his daughter-in-law. Threatened by her husband to not tell anyone about this situation, she reluctantly complies and opens her legs for her hateful father-in-law. As the night progresses, she finds herself being repeatedly penetrated against her will until finally reaching multiple orgasms under the forceful pleasure of her unwanted lover.

結婚3年目の人妻。夫の父親と同居中。多忙な夫は出張が多く留守がちで夫婦の営みもなく欲求不満の妻はオナニーをするが、その様子を除き見てニヤける義父。ある日、浮気相手の宅配業者が来てセックスしてしまうが、またも覗いていた義父。そして、義父はオナニーや浮気現場を目撃した事をネタに嫁の体を求めてくる。夫にバラすと脅され断りきれず股間を開く。更に、夜●いで犯●れて大嫌いな義父に何度もイカされ絶頂する豊満嫁。