Charles Van Horn, son of rich and powerful Théo Van Horn, calls upon his former teacher Paul Régis to help him solve the mystery of his recurring bouts of amnesia.

After long absence, a man returns to his hometown only to find his best friend has become an alcoholic.

On a work assignment in Germany, failed journalist Albin crosses paths with Andreas, a successful writer, and his wife Hélène, who quickly becomes the apple of Albin’s eye. While Andreas is off on a business trip, Albin tries to seduce Hélèn and, eventually, take over Andreas’ life

In this deadly game of cat and mouse, Roland Wolf is writing a book on the life of game show host Christian Legagneur--or is he?

Forced to work extremely hard to keep things afloat, Paul begins hearing voices in his head questioning his past choices. Convinced that his wife has been unfaithful, he begins to see every male guest as a potential threat. What follows is Paul's downward spiral into the madness of deranged jealousy where he finally discovers that hell is not a state of mind – hell is himself.

Six vignettes set in different sections of Paris, by six directors. St. Germain des Pres (Douchet), Gare du Nord (Rouch), Rue St. Denis (Pollet), and Montparnasse et Levallois (Godard) are stories of love, flirtation and prostitution; Place d'Etoile (Rohmer) concerns a haberdasher and his umbrella; and La Muette (Chabrol), a bourgeois family and earplugs.

Young provincial Charles arrives in Paris to stay with his cousin Paul while studying law. Paul is a decadent, bohemian pleasure-seeker who shows the meek, diligent Charles the thrills of city life. When Charles falls for Florence, one of Paul's acquaintances, relationships begin to shift.

Sophie, a quiet and shy maid working for an upper-class French family, finds a friend in the energetic and uncompromising postmaster Jeanne, who encourages her to stand up against her bourgeois employers.