In the year 3000, man is no match for the Psychlo's, a greedy, manipulative race of aliens on a quest for ultimate profit. Led by the seductive and powerful Terl, the Psychlo's are stripping Earth clean of its natural resources, using the broken remnants of humanity as slaves. What is left of the human race has descended into a near primitive state, believing the invaders to be demons and technology to be evil. After humanity has all but given up any hope of freeing themselves from alien oppression, a young man named Tyler decides to leave his desolate home high in the Rocky Mountains to discover the truth, whereupon he is captured and enslaved.