A WW1 flying ace and his infantryman friend embark on a perilous quest for unimaginable riches. After arguing over who shot down a famous German flying ace, the two men discover on the downed pilots body a secret ledger; a ledger claiming to know of a lost city of gold. The two men make a pact to discover this kingdom and share the wealth equally. Unbeknownst to them, the downed pilot was not dead and has recovered to discover their thievery. Angered that the map was stolen from him moments before he was able to translate it completely, the German now hunts them hoping to destroy the two men and find the lost kingdom for himself. They are now hunted by what they believe to be the dead man's ghost and must deal with the repercussions of war as it pursues them garbed as one man's spirit of vengeance.