Someone is killing Parisians of Arab ethnicity. When an Algerian diplomat is murdered by the same assailant, two Algerian detectives are sent to help the French with the investigation and they have their own ways of doing things.

A special agent is assigned to protect a wealthy business magnate. However, when the businessman is kidnapped in a daring ambush, he teams up with a seasoned detective to crack the case. But soon he discovers the case isn't that simple.