A father finds himself at the mercy of his daughters, who are more than willing to expose their vulnerable naked bodies after baths. They go to great lengths to separate him from his wife, even offering themselves up in place of her. Despite being told that it's not okay without mom around, they continue to indulge in increasingly explicit acts. While admitting that their mother-in-law isn't as attractive anymore, he can't help but feel like he's crossing a line as a parent... But damn if it isn't too erotic!

風呂上がりの無防備な姿をさらす娘たちに翻弄される義父！母と別れさせるためになんでもする娘たちに義父も陥落寸前！「お母さんがいなくても平気だよ。私たちが全部代わりをしてあげるから」と、どんどんエッチなことをしてくれちゃう娘たち。お母さんにバレたらマズイからと説得しても聞く耳持たず。むしろさらに過激な行為に！確かに老けた嫁よりも娘たちの方が魅力的だが…。父親として間違っている気がする。でもエロ過ぎ！