「くるみ」の夫婦は相思相愛の円満夫婦。しかし年上の旦那は精力が弱くセックスレスである。ある日、夫の忘れ物を届けてくれた部下を家に上げる。夫は部屋で仕事を片付けるからと彼女の相手を部下に頼む。部下は「くるみ」のイヤラシイ体に手を出してしまう。久しぶりのセックスと部下のチ○ポに夢中になってしまった彼女は部下との密会を繰り返し、種付け中出しを要求。突然帰った夫と修羅場になるが、旦那よりも部下とのセックスとザーメンに夢中になる淫乱女に変わり果ててしまうのだった。The couple in "Kurumi" is a loving and amicable couple. However, her older husband has low energy and no sex. One day, she brings home a subordinate who delivers her husband's forgotten items. The husband asks his subordinate to take care of the work in his room. The subordinate, who has had a few drinks, starts to touch "Kurumi's" dirty body. She becomes crazy about sex after a long time and her subordinate's dick, so she has secret meetings with him again and again, demanding to be seeded and Nakadashi (cum inside). She gets into a fight with her husband who suddenly returns home, but she turns into a slut who is more crazy about sex and cumming with her subordinate than with her husband.