The widowed proprietress, Saori, runs a quiet countryside hot spring inn all by herself. One day, she receives a group booking for the first time in a while and resolves to serve her guests with utmost hospitality. However, Saori knows little about their work or routines, and her inexperience ends up irritating the guests. Desperate to calm things down, she tries her best to appease them, but an unexpected incident occurs. The department chief can't find his wallet and immediately blames Saori, demanding she pleasure him orally. She resists fiercely, but is forcibly made to perform a blowjob and is filled with cum. The next day, another employee reveals he spied on yesterday's blowjob and demands the same treatment, luring Saori into the bathhouse where she's forced into soapland-style bathing services. Powerless to refuse, she obeys their commands. The novelty of the experience and the sensual play of bubbles heighten Saori's sensitivity, and she involuntarily reaches orgasm. That night, during dinner, the guests conspire to make her trip and get her drunk. To apologize, her kimono is ripped off and she's forcibly penetrated. Her body and mind already sensitized by the various sexual acts inflicted upon her, Saori climaxes repeatedly even as she's being raped.