World War I. The Germans are developing a mysterious weapon to break through the trenches. American pilot Jack Shannon and Archie Caldwell, Britain's greatest stage magician, are sent behind enemy lines, into the heart of the supernatural vortex that is the Black Forest. There, in a remote castle, they match wits with evil occultist Avery Dye, who aims to use the Frankenstein Monster as a template to create an army of unstoppable re-animated dead! In order to thwart the forces of evil. Jack and Archie will be forced to battle Nosferatu, Werewolves, a Sorcerer and the Frankenstein Monster himself.