Despondent at losing his lover, a man wanders the streets of Paris and has an affair with her kinky friend.

Raï is about a gang of youths in a Parisian suburb.This is the multicultural environment in which Mezz, Aziz, Laurent, Nordine, Poisson and the others have grown up. There is no future in Garges-les-Gonesses. Unemployment is high, drugs and violence are a part of everyday life. The opportunity to escape seems nonexistent.

To be closer to his children following his divorce, Laurent Monier, a history and geography teacher in a peaceful provincial high school, accepts a position in a sensitive college in the Paris suburbs. He is assigned the hardest class, the fourth techno, and he finds an apartment in the Cité des Muriers, a particularly difficult district.