The proctology clinic is a hidden paradise for anal maniacs! At this hospital staffed by beautiful nurses, perverted M men pretend to be sick to receive treatment, enjoying more affordable pleasures than at regular brothels thanks to insurance coverage. In the hallway, an M man fakes illness, claiming "my butt hurts," and is soon touched anally by a nurse's fingers inside the examination room. Late at night, he becomes captivated by forbidden acts unfolding before his eyes. Senior nurse seduces her junior with, "Let's practice applying ointment to your ass," luring her into a sweet lesbian world. Then, a female doctor boldly pleads with the chief physician, "Let me lick your asshole." With a promise of secrecy, the M man finally demands anal sex from the nurses!