Santa becomes a vampire. Then on Christmas Eve, he infects all the children of the world, and on Christmas morning, the children infect their parents, and almost everyone in the world becomes a vampire. The galaxies have lined up so that anyone can walk in the spirit world to visit Earth. This brings mutants from planet Zosh with Santa's counterpart, who is Malador, who claims to be the master of the universe. Malador and his mutants are also vampires, and they come to Earth to steal women and take them back to planet Zosh to reproduce with the mutants and make beautiful people again. The aliens who come to Earth have different levels; some come for good, some come for bad. And the aliens tell Santa there's one way he can stop the chaos on Earth; Santa has to kill the master vampire Magnus Flintch, who is his best friend. As the story unfolds, other creatures come from different worlds to visit Earth and wreak havoc on humans.