Arthur Curry learns that he is the heir to the underwater kingdom of Atlantis, and must step forward to lead his people and be a hero to the world.

Old school magic meets the modern world in this epic adventure. Alex thinks he’s just another nobody, until he stumbles upon the mythical sword in the stone, Excalibur. Now, he must unite his friends and enemies into a band of knights and, together with the legendary wizard Merlin (Sir Patrick Stewart), take on the wicked enchantress Morgana. With the future at stake, Alex must become the great leader he never dreamed he could be.