McKenzie Lee, Olivia Madison, and Joshua Rivers find themselves in a taboo threesome, orchestrated by a pervy therapist in his office. McKenzie, the innocent-looking stepsister, watches as Olivia gets her pussy licked by Josh, her stepbrother. The room fills with the sound of wet sucking and moans as Josh switches to reverse cowgirl, pounding Olivia's tight cunt while McKenzie rubs her own needy slit through her thong.