Kirth Gersen carries in his pocket a slip of paper with a list of five names written upon it--the names of five Demon Princes. The Demon Princes are a race of beings who disguise themselves as humans and delight in power and destruction. however, to Kirth they are merely murderers who killed his family and destroyed his home planet--and who deserves to die for those misdeeds. Three have already fallen in Kirth's hands, but there are two more names on his list, two more Princes who will live only long enough to regret their evil ways.