Suzu, a young female innkeeper, started working as a bathhouse girl to revive the business of the hot spring inn she runs with her husband. One day, she had sex with the husband of a married couple staying at the inn, and was unable to forget the pleasure, so the next day she began to sleep with the partners of the guests. She has also had sex with businessmen who come to soothe their fatigue at the hot springs, couples who come as guests, and even had foursomes with multiple guests at the same time...