Desiring control of the kingdom, evil wizard Pendragon devises a cunning machination to usurp the throne. By abducting and forcing Princess Elaine to marry him, Pendragon will coerce the king into abdicating his power. When Pendragon sends a giant to kidnap Elaine, a simple farmer named Jack witnesses the abduction, and bravely slays the beast. Undeterred, Pendragon has more power and creatures at his disposal.
| Actor | Role |
|---|---|
 Kerwin MathewsJack | Jack |
 Judi MeredithPrincess Elaine | Princess Elaine |
 Torin ThatcherPendragon | Pendragon |
 Walter BurkeGama | Gama |
 Don BeddoeImp | Imp |
 Barry KelleySigurd | Sigurd |
 Dayton LummisKing Mark | King Mark |
 Anna LeeLady Constance | Lady Constance |
 Roger MobleyPeter | Peter |
 Robert GistScottish Captain | Scottish Captain |
 Tudor OwenChancellor | Chancellor |
 Ken MayerBoatswain | Boatswain |
| HHerman BelmonteNobleman (uncredited) | Nobleman (uncredited) |
| SSam HarrisParty Guest (uncredited) | Party Guest (uncredited) |
 Stuart HolmesCelebration Guest (uncredited) | Celebration Guest (uncredited) |
| RRichard LaMarrRoyal Court Member (uncredited) | Royal Court Member (uncredited) |
 Jack MowerNobleman (uncredited) | Nobleman (uncredited) |
 Monty O'GradyNobleman (uncredited) | Nobleman (uncredited) |
| BBert StevensCelebration Guest (uncredited) | Celebration Guest (uncredited) |
 Helen WallaceJack's Mother (uncredited) | Jack's Mother (uncredited) |