American bombers keep missing an important target in the heart of Germany, but Allied command produces an ace up their sleeve in the form of a German-American GI, Sgt. Reiniger, who knows the area well and can pinpoint the elusive objective - as long as he goes along for the ride. Although his attendance produces the desired result, Reiniger and Gallagher & Crew are forced down at the Russian front, but just a little too close to the German lines where they are captured and interrogated. Now Reiniger becomes a liability as both the Americans and the Germans close in on his closely guarded secret that could get him and Gallagher's men executed.