START-432 Nagisa Ren, a beautiful and lewd young hostess who seduces single guests and married couples on a hot spring trip and repeatedly has sex with them inside the hotel.

At a hot spring inn he and his wife visit, he meets the seductive proprietress, Nagisa. Behind her courteous hospitality lies her true nature: a lecherous woman bent on destroying a family man. While his wife is resting, they make love again and again, and the man loses his mind, but what will the outcome be?