Four hundred years after a devastating war which virtually eliminated the human race, rusted robots and human skeletons litter the landscape of the ravaged planet. Little organic material endures, only cyborgs. Alongside an old California freeway appears a black-clad warrior. Created by humans to do their fighting for them, he's a super-intelligent humanoid known as OMEGA DOOM. A once-proud android killer, he now wanders aimlessly across a land where conventional weaponry was melted during the war and ammunition for the few remaining guns is highly prized. Armed with only deadly silicon shanks, which he flings at his victims with laser-like precision, Doom is like the quick draw killers of his Old West human ancestors.

In a ruined corner of the city stand the remains of a faded amusement park, Old World Europeland. It's there that the survivors of two rival cyborg factions -- the Roms and the Droids -- maintain an uneasy truce that's presided over by the Bartender, a worker Drone whose saloon dispenses precious water to the combatants. Lying disconsolately amidst the debris is the Head, a former teacher Drone. In his dismembered state, the Head has been used as a football by a volatile Droid known as Marko. But Doom helps this talkative new friend to find a working body in exchange for the lowdown on the local feud.

On one side, the Droids are led by Zik, with her cohorts Marko, Zik Too and Titus. Standing against them are the murderous Blackheart and fellow Roms, Zinc and Ironface. The android gangs see the new stranger in their midst as a threat to be easily snuffed out -- a miscalculation that proves to be fatal. But as Doom responds ruthlessly to their homicidal challenges, in the process, he brings a hint of long-lost humanity to his deadly purpose.