Jamie Michelle, the sultry teen, and Billy Boston, her possessive stepfather, clash over her new boyfriend. Penny Barber, a kinky therapist, intervenes, prescribing a taboo threesome to cure Billy's jealousy. In her medical office, Penny watches as Jamie and Billy undress, their bodies tense with lust and resentment. She guides them, instructing Billy to kiss Jamie's neck as she strokes his cock, and telling Jamie to suck Billy while Penny fingers her from behind. The room fills with their moans as they follow Penny's orders, their taboo lust consuming them.