While at a U.S.O. dance, a beautiful princess is kidnapped by a group of Nazis. Soon after her rescue by G.L., General Brock asks Alan and 3 others to form a special squad to go behind enemy lines.; After fending off a Nazi attack, the hand-picked team is flown to Africa and is shot down over the Sahara region by a mysterious Arab leader called "The Black Prophet."; The team fights valiantly, but is captured. Then --- the unexpected occurs: one of the men turns traitor!; It's the Legion of the Lantern versus Nazi Captain Kortz, as G.L. trails the infamous Nazi spy back to his HQ in America for the final showdown.