When a mysterious Black Knight comes to Camelot and challenges its knights to mortal combat, Merlin asks the Great Dragon to help him forge a weapon to slay the unbeatable foe.
When Merlin learns that a knight is using a magic shield to cheat at Camelot's annual sword tournament, he must expose him before Arthur becomes the next knight to die.
Merlin arrives in Camelot and learns that King Uther has forbidden magic, which is punishable by death -- yet, it is magic he uses to save the life of Arthur, the king's son.