A counterterrorism task force investigates the 1998 Ajaccio assassination of Claude Érignac, the prefect of Corsica. Based on true events.

March 1943. In the middle of the Italian occupation of Corsica, two Communist resistance brothers strategically link up with two Italian trouffions in order to get the information necessary to organize the parachute drops on the Balagne. A real friendship is born between these men, the first steps of the reversal of the situation and of the alliance that followed the Allied landing in Ajaccio in September of the same year.