In Aquaman 3, Arthur Curry (Jason Momoa) continues his role as King of Atlantis, striving to maintain peace between the underwater kingdoms and the surface world. However, an ancient threat is resurfacing, jeopardizing the peace he has built.

The film opens with a mysterious tremor occurring at the bottom of the ocean, awakening Atlan, the original king of Atlantis, who has been resurrected by a powerful sorceress named Nereid (Timothée Chalamet). With a grudge and a desire for revenge, Atlan is determined to reclaim his throne and expand his power over all of the Seven Seas, including the surface world.

Atlan wields the Trident of the Deep, a legendary weapon with the ability to control the ocean and unleash devastating natural disasters. Arthur must rise to this challenge, seeking to protect both Atlantis and the surface world, while exploring the secrets of his legacy.

The film promises to deliver spectacular action scenes and dramatic twists as Aquaman faces old enemies and new threats in the fight for power and the survival of both worlds.