Out of the caverns of the lost came the deathless beast-men of Herr Goulon, Hunland's Master-mind of Murder and to save the world he was fighting for, the Ace American Flying Spy had to undertake a solo flight beyond the grave! G-8 and his Battle Aces rode the nostalgia boom ten years after World War I ended. These high-flying exploits were tall tales of a World War that might have been, featuring monster bats, German zombies, wolf-men, harpies, Martians, and even tentacled floating monsters. Most of these monstrosities were the work of Germany's seemingly endless supply of mad scientists, chief of whom was G-8's recurring Nemesis, Herr Doktor Krueger.