The year 19xx. Third Reich has cloned thousands of zombie pilots in the secret labs to support the plan of conquering the world. The pilots will wipe out the allied air force and enforce Luftwaffe's strategic to dominance in the sky, opening the way to bring the world down. To stop the Nazi and defeat their insidious plot, the allied command has called up the three top pilots and ordered to destroy the enemy at any cost. The operation has been code named "Sky Fire".