Taking Advantage of Bob: Turnabout Is Fair Play

Bob and Carol, young professionals, are a swinging couple. Bob sometimes blindfolds or ties Carol up and invites strangers or "safe" friends to play with her sexually. Interested in trying something new, they switch roles, but little does Bob suspect that Alice has invited her college friend, Rhonda, a tall, athletic and somewhat macho woman, and Maria, the next-door neighbor, to join her in the fun.