2525 A.D. Man has colonized the stars. The wealthy and powerful implant their brains in cloned versions of themselves to gain immortality. As a side-effect, occasionally a clone develops mutant abilities. A clonehunter and his new partner have to track down a clone who threatens to destroy the planet unless the rich man he was cloned for gives him all his wealth.

Trapped on a space station orbiting Earth, a small army of human survivors battle the undead in order to prevent the destruction of Earth.