Quentin and Antoine are 18-year-old twins. Without their father knowing it, they set out on a voyage to Spain, where their mother's funeral is to take place. The two brothers barely knew their mother. Their hitchhiking journey is full of encounters, arguments, reconciliations, and experiences. Their time on the road also reveals their differences, the splits in their attractions, and the confusion of their feelings.

In a world without loneliness in which everyone shares their life with their double, Lucienne is in a relationship with Paul, a former lover who has lost his twin. While she wants his love, he just wants to find his brother. Individualism and exclusive relationships are not tolerated in this world, generating more disgust from Lucienne. Her desire drives her away from her sister and probably from Paul.

Amine, a young Algerian, rents a camcorder and films souvenirs on his way to Eldorado.

Chahine is going to be a father for the first time. He then realizes that his history and that of his parents escapes him. He becomes determined to get some answers.

Deborah and Rachid both grew up in a Lyon suburb where everyone knows each other. Their respective religions and cultures weigh on them and forbid their budding love. Two religions that all seem to oppose but ultimately not so different from each other. Braving family and religious prohibitions, they meet again on the evening of a starry night. Treason? The line has been crossed ... from this night of love two twins came into the world.

1956. Algeria is a French colony. Fernand and Helene are madly in love. Fernand is an activist, fighting for independence alongside the Algerians. Helene is fighting for Fernand’s life. History will irrevocably change the course of their destiny.