Anthropologist Laurie suggests her frigid friend Vera get sex therapy which opens up the floodgates when multiple women (including the anthropologist's sister and a sex therapist) find themselves drawn to the husband.

Barbara, a frustrated writer who is also sexually frustrated, seeks to recharge her life by moving into a Manhattan apartment, where she earns money typing up manuscripts for other writers. Next door, a sexy young lady plays a variety of erotic games revolving around her hypnotically humming vibrator. When Julie, Barbara's hot-to-trot sister shows up, she reluctantly allows her to stay, even though memories of incestuous girlhood explorations between them cause her obvious distress.

Henning is a fashion photographer driven by visions of artistic glory. He is encouraged by a literary agent to produce a volume of erotic nudes and works to create the perfect layout with his favorite model, Leslie. All seems to be going well until the mysterious Joyce appears; dark and sensual, Joyce plays games with the photographer's ego, driving a wedge between Henning and Leslie and seducing one of his other models. Blinded by his own ambitions, Henning is unable to see the ruinous web that Joyce is weaving.