Mona Wales, the experienced sex therapist, finds herself in a taboo situation as Tommy Pistol, her patient's husband, offers her a session she can't refuse. Cherie Deville, another patient, joins in, turning the therapeutic encounter into a hardcore, kinky threesome. Mona's tight ass takes Tommy's massive cock as she's tied and gagged, her body writhing in submission, while Cherie eagerly awaits her turn.