The King of Atlantis has died, and with the throne vacant, an ancient enemy—the Thule—emerge from a shadow realm, seeking to conquer both Atlantis and the surface world. With their twisted magic and monstrous legions, the Thule can only be stopped by the one true heir: Arthur Curry. Raised on land, unaware of his royal lineage, Arthur lives a quiet life by the sea—until Orm, his noble yet conflicted half-brother, seeks him out.
Knowing Arthur’s bloodline holds the key to Atlantis’ survival, Orm brings him to the underwater kingdom, where Arthur meets the fierce and commanding General Mera. Though reluctant, Arthur gradually accepts his heritage, learning Atlantean customs, unlocking ancient powers, and training under both Mera and Orm. Together, they unite Atlantis against the encroaching Thule.
In a climactic siege, Arthur, Mera, and Orm lead a massive army into a battle beneath the sea. The Thule’s dark magic ravages the battlefield, but Arthur wields the Trident of Atlan to turn the tide. With the Thule defeated, Arthur is crowned King, Mera becomes his Queen, and Orm, whose jealousy briefly surfaces, humbly accepts the role of General.
Post Credits: Five years later, Arthur swims through a quiet reef, taking in the peace of his kingdom. Suddenly, the water trembles. He looks up to see a massive alien structure—the World Engine—tearing through the sky. Arthur narrows his eyes, sensing a new war is about to begin.
