From page to king Arthur

Secret prince Arthur, a palace page, lost his father King Uther—humanity's greatest dragon slayer—to traitor Mordred. Hiding his name, he studies magic under Merlin: to avenge his father, he must reach Avalon's mage tournament and draw the sacred sword. He trails Mordred's son, braves a dragon, saves Guinevere, and earns the blade to topple the traitor.