The arrival of a team of teenage guerrilla fighters spells "double-trouble" for the Patrol. The embittered young partisans, led by a 17-year-old Jean-Claude with his fiery girlfriend Monique, are determined to do things their way in an unplanned raid in an impenetrable S.S. camp, even though this means putting the Patrol temporarily out of action.

Troy goes undercover to receive a locket of microfilm from a female French Resistance fighter. But before both are captured, he hurriedly disposes of the microfilm in an open grave. After Troy refuses to divulge the location of the locket, Dietrich sentences them both to hang--and Troy must find a way to get word to the Rat Patrol for rescue.