Jason Momoa as Arthur; Amber Heard as Mera; Willem Dafoe as Vulko; Patrick Wilson as King Orm; Nicole Kidman as Atlanna; Dolph Lundgren as King Nereus; Yahya Abdul-Mateen II as Manta; Temuera Morrison as Tom Curry; Ludi Lin as Captain Murk; Michael Beach as Jesse (Manta's Father); Randall Park as Dr. Stephen Shin; Graham McTavish as King Atlan; Leigh Whannell as Cargo Pilot; Tainui Kirkwood as Young Arthur (Three Years Old); Tamor Kirkwood as Young Arthur (Three Years Old)
Once home to the most advanced civilization on Earth, the city of Atlantis is now an underwater kingdom ruled by the power-hungry King Orm. With a vast army at his disposal, Orm plans to conquer the remaining oceanic people -- and then the surface world. Standing in his way is Aquaman, Orm's half-human, half-Atlantean brother and true heir to the throne. With help from royal counselor Vulko, Aquaman must retrieve the legendary Trident of Atlan and embrace his destiny as protector of the deep.