Alain Vince

The young Eva lives with Michelle. One day, she leaves for a man. Eva, upset, then decides to explore heterosexual relationships. She meets Lois, a man of unbridled morals, who gently introduces him to more and more perverse practices.

It is very difficult to follow the plot, but a guess is that a hospital (the 'Clinique des Ormeaux') is supplying young female patients to be kidnapped into prostitution, sampling the goods before they go.