Summer 1942, and the nascent French Resistance is asking the Allies for help as they become increasingly active against the German occupiers. Their requests for arms and equipment are urgent, but the Allies are hesitant to respond until they know more about the willingness of the French to fight. The decision is made to parachute special operatives--Jedburghs--into France to determine the state of the Resistance.

The Jedburghs follows one of these clandestine three-person commando team attached to the super-secret British Special Operations command. The team parachutes into Nazi-occupied France to lead the local Resistance forces in conducting sabotage and guerrilla warfare against the German occupiers in a deadly kill or be killed series of sabotage operations.

The specially selected team members--a combat-hardened U.S. Marine, a tough-as-nails French commando, and a female French émigré out for revenge--must first undergo a series of tests and field operations to determine if they have what it takes to be a behind-the-lines agent. In the process they develop an unbreakable bond of loyalty that unites them as they lead the fractious members of the Resistance against the battle-hardened Germans and face the ultimate test of loyalty when one of their number is captured.