A couple has consulted an experimental sex therapist to save their stale marriage. The unconventional Dr. Smith is a sultry sex kitten with a vibrator fetish who masturbates while watching her clients make love. The first two sessions were eye-opening and orgasmic for all. Their third appointment is a hands-on session, which takes place in the clinic's spa. John finds himself in the middle of a hot, wet menage a trois with two sexy women.