It is 500 years since the fall of the Sabrin Empire, an empire whose rulers sealed their fate by refusing to countenance the devel opment of weapons that could have saved them from the barbarians. Now the Sabirn have fallen on hard times indeed, & lie supine beneath the boot of the Ancar, laboring in mines & fields & stretts at w ork no member of a "higher" race would touch. But rumors abound that among the Sabirn are some who retain occult knowledge, & use it in secret rites aimed at the overthrow of the new master race. The Ancar say this is justification for genocide. The Sabirn say genocide is justification for anything; The Sword of Knowledge cuts both ways.