19-year-old Mimura Sae, former member of "Fuji●●Dan," appears at a mixed-gender hot spring as an exhibitionist girl! She's obsessed with exposing herself, boldly flashing her D-cup breasts to amateur couples and groups—the main highlight of this video. Under close-up surveillance in the tranquil hot spring resort, she interacts with various amateurs to heighten her excitement. The film includes scenes where she provokes men and performs blowjobs. The story takes a turn when like-minded exhibitionists appear, leading to encounters with perverted flashing couples. In their room, she demonstrates sex with her boyfriend, and the big-breasted girl joins in with verbal domination. Sae spirals further out of control, with irresistible scenes of her writhing passionately at family restaurants and lodgings.