Because they could no longer stand the xenophobic comments and behavior of their neighbors, Véronique and Sylvain Marchand, parents of a little girl and members of the Stop Racism organization, went into exile in a quiet suburban town, where they bought a house, the villa "Mon rêve". Soon after, the Dialo family, friendly Africans, moved into the adjoining house. At first, the two families get along perfectly. The only problem was that the Dialos organized many parties, which often ended late at night. The patience and understanding of the Marchands only delay the inevitable conflict.

The film follows four families, with different nationalities (French, German, Russian and American) but with the same passion for music, from the 1930s to the 1960s. The various story lines cross each other time and again in different places and times, with their own theme scores that evolve as time passes. The main event in the film is the Second World War, which throws the stories of the four musical families together and mixes their fates. Although all characters are fictional, many of them are loosely based on historical musical icons (Édith Piaf, Josephine Baker, Herbert von Karajan, Glenn Miller, Rudolf Nureyev, etc.) The Boléro dance sequence at the end brings all the threads together.

In WWII France, poor and illiterate Henri Fortin is introduced to Victor Hugo's classic novel Les Misérables and begins to see parallels between the book and his own life.

Alice is a happily married woman with Christophe, who loves her deeply despite suffering facial deformation. His life changes dramatically following a cosmetic operation, but also that of her husband, a man becomes extremely jealous and possessive.

In the beautiful area of ​​Paris, Maria and José Ribeiro lived for almost thirty years on the ground floor of a Haussmann building, in their dear little lodge.

Annie is a middle-age wife, still sexy and pampered by her husband, Phillippe, who is the owner and general manager of a dynamic company. Under the deluge of sexy Swedish movies, sexy advertising on the streets, sexy intimate clothing in ladies' shops, and even talks about sex and marital infidelity with her mother and female friends, Annie starts feeling left aside by her husband, and trying to attract in a number of ways - and failing. It's not the all-purpose secretary at the office that is keeping him late, it's a tax expert that, asking the most innocent questions, is finding out how Philippe can manage a company without profits, and still manage a home, may be two... with high quality levels.

A foundling, raised in the circus, Sam Lion becomes a businessman after a trapeze accident. However, when he reaches fifty and becomes tired of his responsibilities and of his son Jean-Philippe, he decides to disappear at sea. However, he runs into Albert Duvivier, one of his former employees. He comes to realise that he has ignored the important things in his life.

In May 1974, Valéry Giscard d'Estaing became President of the Republic and wanted to bring about a new era of modernity. One of his first decisions was to break up the ORTF with the creation of three new television channels: TF1, Antenne 2 and FR3. Three new public channels but autonomous and competing. It is a race for the audience which is engaged then, and from now on the channels will make the war! This competition will give birth to a real golden age for television programs, with variety shows in the forefront. The stars of the song are going to invade the living rooms of the French for their biggest pleasure. This unedited documentary tells the story of the metamorphosis of this television of the early 1970s, between freedom of tone, scandals, political intrigues and programs that have become mythical.