Capt. Richter must convey a large cache of "confiscated" diamonds to Berlin to finance the Nazi desert campaign. The Rat Patrol must steal the diamonds from a military HQ in the desert. But, brute force will not succeed, so they need to attempt a plan full of guile and cunning to pull the theft off. So, Troy infiltrates the German H.Q., posing as a blinded Afrika Korps officer.

The Patrol's orders are to rescue famous American pop star Mickey Roberts captured by Dietrich. The singer is a P.O.W. in a small Afrika Korps compound, and the S.S. arrives to turn Roberts into a propaganda coup. Troy lets himself be captured to free Roberts.