From page to king Arthur

Arthur is secretly a prince serving in Albion's royal armory. His father, King Uther, was betrayed and killed by Minister Mordred twenty years ago. Hiding his identity, Arthur trains under Merlin to avenge him. To gain passage to Avalon and draw the sacred sword of kings, he endures humiliation, slays a dragon, and rescues Guinevere—all to defeat Mordred and lead humanity over the dragons.