From page to king Arthur

Arthur works as a page in the armory of Albion's royal palace, but few know he is really a prince hiding in plain sight. Two decades ago his father, King Uther, the kingdom's ruler and humanity's mightiest dragon slayer, was betrayed by his minister Mordred and died brutally on the battlefield. Trained in magic by Merlin, Arthur is told he must journey to the Isle of Avalon, win a tournament of mages, and pull free the sacred sword of kings to avenge his father. To reach the island he must travel alongside Mordred's son, Agravain, facing scorn and hardship on the road.