It is the late 19th century & a mysterious airship orbits through the foggy skies. Its terrible secrets are sought by many including the Royal Society a fraudulent evangelist a fiendish vivisectionist an evil millionaire & an assorted group led by the scientist & explorer Professor Langdon St. Ives. Can St. Ives keep the alien homunculus out of the claws of the villainous Ignacio Narbondo?