Just prior to the start of WWII, JP Brandt, an Army Air Corps test pilot, makes a big mistake, is publicly court-martialed and humilated worldwide. He takes the only job he can get - flying an experimental airplane around the globe from South to North poles. Crashing in the Arctic, he finds himself in an undiscovered land inhabited by a lost tribe of Vikings who ride giant eagles and fight to survive against prehistoric monsters. He discovers that Nazis have set up a secret base on the far side of the island where they test weapons for a pending attack. In a surprising turn of events, the disgraced pilot becomes America's only hope against a devastating sneak attack by the Nazis and their powerful new electromagnetic weapon.