The Couples of Boulogne(1974)

Les Couples du Bois de Boulogne

In order to receive their part of an inheritance, Barbara and Bernard must find the other beneficiary, Jean-Pierre. As they search for him, they arrive at Boulogne, which they will find is used by rich people as a place to be sexually free in total privacy. There, they will be led by other couples to fulfill their most daring fantasies.