A doctor's life takes a mysterious turn when his ambulance plunges into a river.

A couple of bourgeois intellectuals, Carlo and Silvia, have been married for twenty years. While she lives in their flat in Rome, he spends most of his time in the country house where he writes his books, openly living with his younger lover, Lù. In return, Carlo has long accepted that her wife may have lovers, but her volatile relationship with a young neo-fascist suddenly rekindles his jealousy.