Prince Arthur, son of King Uther Pendragon and Queen Igraine, was rescued as an infant during King Lavik's assault on Camelot. The magician Merlin entrusted him to a retired knight, who raised Arthur unaware of his royal lineage until the age of 15. Arthur's destiny emerged at a tournament when he drew the enchanted sword Excalibur from a stone, proving his rightful claim as Britain's true king.
Revealed as king, Arthur embarked on a quest to defeat the tyrant Lavik and his ally, the witch Medessa, and unify the kingdom. He gathered loyal knights—Lancelot, Tristan, Percival, and Galahad—forming the Knights of the Round Table. Their mission centered on retrieving the crucial Holy Shield to overcome Lavik's forces. Arthur led them through numerous battles, strategic confrontations, and the defense of Camelot itself.
Later, adopting a concealed identity to confront the new adversary Ziking, Arthur journeyed with four new companions. Their diverse adventures included rescuing kidnapped allies, facing adversaries like the Ninja Women, and unraveling mysteries such as the Black-Horsed Knight's appearance. These efforts culminated in heated battles against formidable foes, securing Arthur's ultimate victory as the Prince on the White Horse.