After divorcing her husband and her son getting a job, Orié found herself staying home, unable to bear the long commute or the thought of going out on weekends. Worried, she decided to take her son on a hot spring trip. Alone together in the hot springs... despite knowing it was wrong, mother and son couldn't help but crave each other's touch. For today, she'd be her son's girlfriend... lost in the pleasure of having her nipples licked and forgetting to resist her son's cock, she loses her reason and engages in forbidden incestuous sex on this trip.