A young girl asks Sir Lancelot's aid. An evil monarch, King Meliot, is selling the young men of the village of Cheddar into slavery.

While preparing for knighthood, Squire Brian uncovers a plot by King Marhaus. The king plans to break a treaty and take over a village.

After the death of a knight of the Round Table, a young man enters a tournament that will decide who will fill the vacancy. But the other knights object to the young contestant because of his shabby appearance. Sir Lancelot intercedes for him.