An anguished university student in his early 30's ponders the state of his life in light of his relationships with a politicized classmate, a TV actress selling the image of a femme fatale and his bourgeois sister.
Two friends live without knowing a most awkward situation: each one is the lover of the other's wife. Jealous, they hire the same private eye to track their women, who, of course, gets very embarassed by the situation, especially when the two couples rent rooms at the same hotel.
