It is set in the futuristic year of 2004, when Earth has been enslaved by a race of aliens known as the Orbs. The Orbs, who look like giant floating eyeballs, have implanted all humans with global tracking devices, forced them to wear nondescript robes and forbid them from speaking or communicating. The protagonist has been assigned by the Orbs to track down fellow humans who are believed to be forming an underground resistance, (wikipedia)