September, 1986. Alice and Martin are 17 years old. They come from provinces to Montesquieu high school in the capital. Like many youngs of their age, born in the 70s and nostalgic of a too comfortable childhood, they progress carefully in life.
While Alice and Martin are finding their footing, demonstrations against the Devaquet law and the tragic death of Malik Oussekine are happening.
Paul Martin and François Leroux are brothers-in-law and comics without fame. One day, the famous television comics, Gaëtan, finds himself in the little theater where Paul and François produce themselves under the name of "Gagsters".
The film starts in the 13th arrondissement of Paris in 1984. Robert Pinot is a police officer as ordinary as clumsy. One day, he stops a certain Josyane, a young drug addict who is also doubled as a pickpocket, nicknamed Marylou. Having discovered that she comes from the same village, Nanteuil, then him, he takes compassion for the young girl and decides to take her under his wing to keep her away from Tony, a dangerous dealer with whom she is in love.
It is 1943 in Paris. Like so many others, the Bourbelle family's home has been taken over by the Germans and they now live in their cellar. Little do they know that the son, Guy-Hubert Bourdelle, is far from being the cowardly hairdresser he pretends. He is in truth the Germans’ most feared opponent: le super-résistant!
The independently-minded daughter of lower-middle class French shopkeepers, Brigitte, one of three sisters, refused to marry the father of her child when she became pregnant. In this film, she reminisces about her family life beginning when she was about five years old, up to the present when she is in her early 20s. Of her two sisters, one has a nervous breakdown and the other one becomes something of a baby factory. Colorful anecdotes of her eventful life lend additional depth to her insights.
Having fortuitously discovered a photograph in which Marthe embraces someone unknown, Étienne Dorsay becomes jealous and imagines various stratagems to identify the lover. In the meantime, he and his friends acquire a weekend house for a very low price.