Police sketch artist Sarah is savagely attacked by a sadist named Theodore Gray. Ten years later, Gray is released from prison, with one thought on his mind: revenge.

It's the year 3000 A.D., and the Earth is lost to the alien race of Psychlos. Humanity is enslaved by these gold-thirsty tyrants, who are unaware that their 'man-animals' are about to ignite the rebellion of a lifetime.