The third in a series of films featuring François Truffaut's alter-ego, Antoine Doinel, the story resumes with Antoine being discharged from military service. His sweetheart Christine's father lands Antoine a job as a security guard, which he promptly loses. Stumbling into a position assisting a private detective, Antoine falls for his employers' seductive wife, Fabienne, and finds that he must choose between the older woman and Christine.

In this riot of frantic disguises and mistaken identities, Victor Pivert, a blustering, bigoted French factory owner, finds himself taken hostage by Slimane, an Arab rebel leader. The two dress up as rabbis as they try to elude not only assasins from Slimane's country, but also the police, who think Pivert is a murderer. Pivert ends up posing as Rabbi Jacob, a beloved figure who's returned to France for his first visit after 30 years in the United States. Adding to the confusion are Pivert's dentist-wife, who thinks her husband is leaving her for another woman, their daughter, who's about to get married, and a Parisian neighborhood filled with people eager to celebrate the return of Rabbi Jacob.

A middle-aged businessman faces bankruptcy after his partner's suicide and a rival's unscrupulous offer to buy his company. Determined to avoid the trap, he finds an unexpected solution through a prostitute.

A young journalist uncovers an assassination disguised as a suicide, linked to an American multinational seeking to dominate French industries. Determined to expose the truth, he races against time to gather evidence before more lives—and his own—are at stake.

Near the end of World War II, Gen. Dietrich von Choltitz receives orders to burn down Paris if it becomes clear the Allies are going to invade, or if he cannot maintain control of the city. After much contemplation Choltitz decides to ignore his orders, enraging the Germans and giving hope to various resistance factions that the city will be liberated. Choltitz, along with Swedish diplomat Raoul Nordling, helps a resistance leader organize his forces.

Juliette, a young woman of twenty-five, works unsuccessfully as a sales representative. Discouraged, on the point of giving up, Juliette meets Christian, a brilliant and seductive salesman, who offers her to play Pygmalion: he will be the master, she will be the pupil. But the master falls in love with Juliette.

The film follows the exploits of Jacques, a car-mechanic turned pro-thief, and his Jewish co-conspirator Simon as their robberies, beginning well before the Second World War, take on a political coloration under the occupation.

Nada, named after a gang of Spanish anarchists, is a small, confused band of French terrorists. They kidnap the American ambassador after one of his regular visits to an exclusive brothel. The gang starts to quarrel amongst themselves as to the diplomat's fate, while the police purge suspects in their attempts to destroy the Nada faction. As the violence escalates on both sides, the States and the terrorists are forced to use one another's methods in an increasingly desperate and relentless conflict.

The yacht of millionaire Hellmann explodes in the Mediterranean Sea, with him and 8 men crew on board. Insurance agent Lucas investigates at the Cote D'Azur, because there's the suspicion that it could have been suicide. He finds out that Hellmann's villa was monitored, the tapes also contain information about the explosion. He uses them for blackmail.

Marseille. Heaps of flowers and funeral wreaths... "A man who no longer defends his colors is no longer a man."