With its defenses gutted by craven appeasers, the Empire is helpless when the League of Dark Stars launches its interstellar blitz. Whole star systems and sectors are engulfed as tyrant Tyrannic's hyperspace invaders mass against Avalon, the star cluster and the Imperial capital near the galactic core. Here Wilf Brim must lead his exhausted, outnumbered warriors in a Hellfire suicidal space battle-if he is to save Avalon and the Empire from total annihilation...