Stolen Lover Massage at Oita Prefecture's Beppu Hot Springs Inn

This is a long-established hot spring inn in Beppu City, Oita Prefecture. A couple and a married couple staying there decide to call for the inn's massage before bed. However, the massage therapists here are a group of corrupt practitioners who, without caring that the husband is right beside them, steal away the female guests they take a liking to!! Unaware of this, while the husband falls asleep during the treatment...