Based on the short story by Georges Simenon. Annoying Annette is bent on seducing Maurice, a handsome lawyer who has his eye on a haughty American Myriam who is running after bashful Bernard. The story takes place in hotels, prisons, and music-making apartments in Cannes.

The film is biographical, telling the story of the life and artistic struggles of the French composer Hector Berlioz. Berlioz is shown as a recalcitrant medical student in an anatomy class dreaming of becoming a composer; at a demonstration during a performance at the Paris Opéra conducted by Habeneck; at supper with other young artists (Hugo, Janin, Dumas, Mérimée, Delacroix); and chasing after his future wife Harriet Smithson, after a performance of Hamlet. Also depicted are his life in a garret, while suffering from an illness due to an abscess in the throat; a visit from his mother who curses him; and the composition of the Symphonie fantastique. The film then shows his marital breakdown, the premiere of his opera Benvenuto Cellini, his travels throughout Europe, his second marriage to Marie Recio (called "Marie Martin" in the film), public acceptance in old age and reconciliation with his son.

Loursat, a lawyer, lives with his daughter Nicole in a sinister and vast bourgeois residence. Abandoned for nearly twenty years by his wife, the brilliant lawyer has sunk into alcoholism and his relationship with his daughter is virtually non-existent. However, one day the corpse of a stranger is discovered in the residence of Loursat. Nicole, who frequents a gang of young people who escape boredom by stealing cars and other objects, is immediately suspected.

The everyday life and activity of "La Dernière Heure", a major evening newspaper, seen through the eyes of Hélène Perrin, a cub reporter trained by Pierre Rabaud, a star in his field. Side by side they will investigate several events: an air show that ends tragically, the coming to France of a Hollywood actress, a lightship caught in a terrible storm...

Guy Carbonnel, a rich industrialist, has more eyes for rugby than for his wife Hélène. René Rivals, his long-time pal, takes advantage of it to court her but Guy is becoming suspicious so René has to find a way to deflect his friend's suspicion. He finally has an idea: he asks Lilian, a circus acrobat, to pose as his mistress. Lilian accepts and they embark on a series of eventful moments.

On a rainy night, eccentric tramp Mr. La Souris finds a corpse. But the body soon vanishes in his car leaving only his wallet. While the police start investigating a missing person report, La Souris concocts a plan to secure his find.

Monsieur Vincent is the respected healer of a Basque village. But nobody knows that Vincent Berteaux used to be a surgeon in Paris. When Assomption, a young holidaymaker, arrives in the village in the company of her mother, little does Vincent know that the past returns to his life.

Picpus is a street and a subway stop where a number of murders have been committed. Maigret tries to find the killer.

An untiring lady social worker, Émilienne, has as one of her charges a stableman who was wounded by his mistress. Unfortunately, Émilienne's young sister who was helping her at work decides to go away with the stableman.

Bernard Lampré, a young composer, is engaged to Hélène Madelin, a gifted intern. Jealous of Professor d'Esperel, the great surgeon she proudly assists, Bernard, goes out and wanders in the rain all night long. He catches cold, falls ill and is sent to a sanitarium. There he meets again Jacqueline, a girl who studied music with him at the Conservatoire. Learning that she is dying, Bernard decides to play the comedy of love to soften her last moments.