It descends from space... THE BLACK FORTRESS raining death and destruction upon the planet Krull.
Who will defend the people?
Who will defy the red-eyed Beast who dwells within the fortress?
One man dares.
Colwyn, who is armed with the magical Glaive. Colwyn, abetted by a band of newly freed felons; a Cyclops with a sorrowful secret; the magician Ergo, small in size but great in heart; an aged seer; and a brave young boy.
Colwyn, whose betrothed is the captive of the Beast and fighting desperately to resist his loathsome embrace...

Based on the screenplay by Stanford Sherman; novelisation of the Peter Yates movie.