Raised on the streets. Born to be king. The young Arthur runs the back passages of Londinium with his crew, not knowing his royal lineage until he draws the sword Excalibur from the stone. Instantly confronted by the sword's influence, Arthur is forced to decide where to become involved with his power. Throwing in with the Resistance and an enigmatic young woman named Guinevere, he must learn to master the sword, face down his demons and unite the people to defeat the tyrant Vortigern - who murdered his parents and stole his crown - and become king.