In the year 520 AD, during the bloody battle of Camlann, King Arthur - aided by his legendary sword Excalibur - lands a fatal blow to his traitor son Mordred. Arthur's dying wish to his loyal knight, Sir Bedivere, is to return Excalibur, the source of his powers, to the "Lady in the Lake." Nineteen years later, an older Sir Bedivere finds himself in jail after trying to free Arthur's son, Owain, from the town guards when he is caught stealing from Lord Antonius. Unaware of his heritage, Owain learns his true identity whilst imprisoned with Sir Bedivere. With his wicked brother, Mordred, falsely claiming to be the heir to the throne, Owian's attempt to reveal the truth about the villainous leader sees Owain thrown into a lake and left for dead. However, his immortal powers see him wake, free of wounds and dressed in regal garb with Excalibur by his side. Upon pulling the sword from the round, he is transformed into a King. Will Owain fulfill his prophecy, or will rage and greed prevail when his murderous, hell-bound brother seeks out his own destiny?