A beautiful bride named Yuihana has married into a family where her husband owes money to his father-in-law. As part of the deal, she agrees to live together with him under one condition—that he helps them pay off their debts by taking care of all household expenses. Little does she know that her new father-in-law has been lusting after her ever since they moved in together. Unable to resist his advances any longer, Yuihana becomes his sexual plaything day after day. Despite being married, she finds herself craving more of her father-in-law's passionate lovemaking while her husband watches on helplessly.

義父に同居をすることを条件に借金を肩代わりしてもらった佳穂夫婦。美しい嫁の佳穂と一緒に生活することになった義父は嫁に体を求めるのである。拒絶できない佳穂はその日以来義父の肉便器になる。絶倫な義父に毎日執拗に体を貪られ、挙句の果てには夫が側にいるのに嫌がる佳穂に愛撫するのである。そんな義父の責めに佳穂は拒絶どころか自ら求めるようになってしまう。