Natsuko, a wife, leaves her husband in charge of the izakaya and goes on a local hot spring getaway by herself. While she is relaxing in the open-air bath, Yamazaki, the head of the local association, suddenly appears. "Let's enjoy the open-air bath together," Yamazaki says, and begins to rub Natsuko's huge breasts. Since Natsuko has borrowed money from Yamazaki's company to open the izakaya, she has no choice but to comply with Yamazaki's demands. She is forced to give him a blowjob and then gets fucked from behind by his rock-hard cock...