Hono once had an affair with a supervisor at her former company. When they were exposed, he was transferred to a regional branch and she was forced to resign, ending their relationship. She later married a man introduced by a friend and settled into an ordinary life as a housewife. A chance reunion with her former boss rekindled the affair, leading to repeated secret meetings. This time they take an overnight hot-spring trip, where the unfamiliar atmosphere heightens their excitement and they give themselves completely to mutual pleasure.