異常性欲者の執念性交為に成すすべなく…大型連休。初めて夫（智）の実家に帰省することになった「まろん」夫の田舎で過ごすことをとても楽しみにしていた。しかし、何故かまろんは夫の二人の両親に違和感を感じていた。その理由は、義父（賢治）の異常性癖。夫の知らないところで、その異常な関係に巻き込まれていく…。息子の妻にスケベ心が抑えられない異常性欲者の義父セクハラ！「お義父さん、これは不同意性交です！！」

Helpless against the obsessive sexual desires of a pervert… It's a long holiday weekend. Maron is looking forward to visiting her husband (Satoshi)'s family home for the first time and spending time in his hometown. However, for some reason, Maron feels uneasy about both of her husband's parents. The reason is her father-in-law's (Kenji) abnormal sexual tendencies. Without her husband's knowledge, she becomes entangled in this abnormal relationship… Her father-in-law, a pervert who can't control his lust for his son's wife, sexually harasses her! "Father-in-law, this is non-consensual sex!!"