After his castle is taken over, Valiant, Prince of Thule (Robby Benson), has a dream, in which King Arthur (Efrem Zimbalist, Jr.) calls him to Camelot. Valiant heeds the advice of the dream, and sets out on a quest to find the famed kingdom. Along the way, he meets two new friends, Arn (Michael Horton) (a peasant) and Rowanne (Noelle North) (the blacksmith's daughter), who join him on his quest to become a Knight of The Round Table. After arriving in Camelot, the plot focuses on the three friends' lives, as they strive to become knights.