Yuno Hyuga, a married woman struggling with a sexless marriage due to her busy daily life, embarks on a hot spring trip with a man other than her husband. Driven by curiosity about how others experience sex, she takes action and uses a remote-controlled vibrator during the trip to seek sensations different from those with her husband. As the tension builds during their stay at the inn, her lover teases and pleasures her relentlessly. She cries out, "It feels so good!" reaching an intense climax unlike anything before, experiencing her first full-body orgasm and squirting uncontrollably.