Those darn Germans are at it again. This time, they turn to a Hindu mystic named Ghoula to find a way to capture the master spy G-8 and crush the Allied military at the same time.
to the task himself--he's currently recovering from being riddled with machine gun bullets during his last encounter with G-8. But Ghoula takes the job--as long as he gets a regular pay check and the services of the top 1000 German pilots, then he can promise Germany will soon win the Great War.
It's the same thing this time. The flying death heads are advanced planes with smoke jets to hide their shape, rigged to make a weird moaning sound as they flew and armored to make them largely immune to machine gun bullets.