On their first road trip together, a couple heads to a hot spring resort. Unable to hold back in the car, the girl enjoys vibrator humiliation play. Once they reach the inn and she changes into a yukata, she's immediately toyed with. They passionately have sex in the outdoor bath, but later, her friend falls asleep—and then ends up seducing her. They end up having forbidden sex right beside the sleeping friend. When the girlfriend grows suspicious of infidelity, she cries herself to sleep. But as her partner touches her body, she wakes up, and while making excuses, they reconcile through sex.