Valentin D is a hot designer architect who claims to be an orphan because he is too ashamed to admit he is the son of working-class scrap metal merchants from the north of France.

In 1991, 24-year-old Detective Alexandre Falco has it all, a loving wife, a new-born daughter and his dream job. But one day out in the field, he is shot in the head. Falco opens his eyes again 22 years later to a changed world, where everything he once had is no longer as it was.

1957. For several months, Henri Charlègue, the ex-director of the newspaper "Alger democratic", banned, has been living in hiding. Suspected of belonging to the FLN, he is actively sought by paratroopers.

"Ambassadors" is a euphemistic name given by the French to Arab "guest-workers," or imported laborers. In this film, the Arab workers are shown enduring the difficulties of life in a racist society, as well as the hardships they impose on one another.