Four couples are getting married. They come from very different environments, and follow different customs and rituals. Marion and Jean, Catholics, will celebrate their wedding at the Chartres Cathedral. Natacha and Mike, in their thirties, want to get married according to the Jewish tradition. Sarah and Ousseynou are Muslims. She is of Moroccan origin, he is of Senegalese origin. Both dream of celebrating a wedding worthy of the Thousand and One Nights. Sonia and Stéphane have already been married and each has two children. Unable to remarry religiously in church, they go for a secular wedding in a casino.