The story takes place in an actual dental clinic located in Tokyo. At this clinic, a corrupt dentist selects preferred patients and targets them on days scheduled for major procedures such as cavity treatment or wisdom tooth extraction. Under general anesthesia that leaves the patient semi-conscious, the dentist restrains them and repeatedly commits sexual assault. Unaware, patients have aphrodisiacs applied to their genitals, and while unconscious, find themselves involuntarily aroused, their vaginas lubricating as penises are thrust inside—unfolding a horrifying series of events.