Meeting at a rural train station is 23-year-old Hitomi, a married woman in her third year of marriage, possessing a stunning figure and an intelligent demeanor. Though her relationship with her husband is stable, she candidly admits, "I'm not lacking love—I'm lacking sex." To help her experience a whole new world of pleasure unlike anything she's ever known, we embark on a private hot spring trip together. Throughout the journey, she gradually sheds her shyness, exposing her most intimate desires as she fully embraces these thrilling, unfamiliar sensations.