43-year-old Kiriko Nio is a divorced single mother working a part-time job away from home. Eight years ago, she reunited with a mature director she had met during a past trip. Back then, her marriage was cold and lifeless, but she endured it for the sake of her child. After that trip, she decided to divorce, left the adult video industry, and settled into an office job. The reunion happened when she recalled that journey and decided to take another hot spring trip. She says, "That time, I truly rediscovered myself as a woman." Tonight, she heats up her body and surrenders herself to a fleeting romance. Drunk on emotion and alcohol, she will never forget this night.