Adolescentes brûlantes pour soirées très spéciales (1981)

A married man and his photographer friend visit a woman and have a threesome. The man's wife finds out about it and, in frustration, visits a sex therapist to discuss her problem. However, the therapist shows her a porn video and hen seduces her. k The therapist then convinces the woman and her husband to film themselves having sex, Unfortunately, the therapist's lesbian lover finds the film and plans to use it to blackmail the couple. Complications develop.