Various experiences of childhood are seen in several sequences that take place in the small town of Thiers, France. Vignettes include a boy's awakening interest in girls, couples double-dating at the movies, brothers giving their friend a haircut, a boy dealing with an abusive home life, a baby and a cat sitting by an open window, a child telling a dirty joke, and a boy who develops a crush on his friend's mother.

In the 19th century a mysterious woman named Adele H. crosses the ocean, from Europe to North America, to relentlessly pursue an handsome officer that denies her satisfaction.

A WWI veteran decides to build a memorial to all of the people who have mattered to him but are now dead.

Ordered to seduce French captain and steal from him classified papers, Mata Hari, an exotic dancer and a spy, instead falls in love with him and blows the cover.

A committed film director struggles to complete his movie while coping with a myriad of crises, personal and professional, among the cast and crew.

Jean Lerat begins his military service at an army camp. Despite his aunt’s attempts to pull a few strings to his advantage, the unfortunate Lerat manages to get on the wrong side of his bullying colonel…

In occupied Paris, an actress married to a Jewish theater owner must keep him hidden from the Nazis while doing both of their jobs.

In the carefree days before World War I, introverted Austrian author Jules strikes up a friendship with the exuberant Frenchman Jim and both men fall for the impulsive and beautiful Catherine.

For young Parisian boy Antoine Doinel, life is one difficult situation after another. Surrounded by inconsiderate adults, including his neglectful parents, Antoine spends his days with his best friend, Rene, trying to plan for a better life. When one of their schemes goes awry, Antoine ends up in trouble with the law, leading to even more conflicts with unsympathetic authority figures.

A young sociologist researching criminal women selects a captivating inmate as his subject. As he conducts interviews in prison, her troubled past and justifications for her actions intrigue him. His growing interest soon blurs professional boundaries, testing his ability to resist her charm.

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.

The Catholic Jean-Louis runs into an old friend, the Marxist Vidal, in Clermont-Ferrand around Christmas. Vidal introduces Jean-Louis to the modestly libertine, recently divorced Maud and the three engage in conversation on religion, atheism, love, morality and Blaise Pascal's life and writings on philosophy, faith and mathematics. Jean-Louis ends up spending a night at Maud's. Jean-Louis' Catholic views on marriage, fidelity and obligation make his situation a dilemma, as he has already, at the very beginning of the film, proclaimed his love for a young woman whom, however, he has never yet spoken to.

Sabine vows to give up married lovers, and is determined to find a good husband. Her best friend Clarisse introduces her to her cousin Edmond, a busy lawyer from Paris. Sabine pursues Edmond, with the encouragement of Clarisse, but Edmond does not seem very interested.

Madame Jouve, the narrator, tells the tragedy of Bernard and Mathilde. Bernard was living happily with his wife Arlette and his son Thomas. One day, a couple, Philippe and Mathilde Bauchard, moves into the next house. This is the accidental reunion of Bernard and Mathilde, who had a passionate love affair years ago. The relationship revives... A somber study of human feelings.

At Bertrand Morane's burial there are many of the women that the 40-year-old engineer loved. In flashback Bertrand's life and love affairs are told by himself while writing an autobiographical novel.

Parisian everyman Antoine Doinel has married his sweetheart Christine Darbon, and the newlyweds have set up a cozy domestic life of selling flowers and giving violin lessons while Antoine fitfully works on his long-gestating novel. As Christine becomes pregnant with the couple's first child, Antoine finds himself enraptured with a young Japanese beauty. The complications change the course of their relationship forever.

Julie Kohler is prevented from suicide by her mother. She leaves the town. She will track down, charm and kill five men who do not know her. What is her goal? What is her purpose?

In 1798, a feral boy is discovered outside the town of Aveyron, France. Diagnosed as mentally impaired, he is relegated to an asylum. A young doctor named Jean Itard becomes convinced that the boy has normal mental capacity, but that his development was hindered by lack of contact with society. He brings the boy home and begins an arduous attempt at education over several years.

As the city of Paris and the French people grow in consumer culture, a housewife living in a high-rise apartment with her husband and two children takes to prostitution to help pay the bills.

Now aged 17, Antoine Doinel works in a factory which makes records. At a music concert, he meets a girl his own age, Colette, and falls in love with her. Later, Antoine goes to extraordinary lengths to please his new girlfriend and her parents, but Colette still only regards him as a casual friend. First segment of “Love at Twenty” (1962).