The story follows Arthur Curry (Jason Momoa), now ruling Atlantis as Aquaman. Despite his efforts to maintain peace, a new threat emerges that could devastate both the underwater and surface worlds. Black Manta (Yahya Abdul-Mateen II) returns, wielding an even ᴅᴇᴀᴅlier weapon powered by ancient magic, vowing to avenge his father and destroy Aquaman.
To stop Black Manta’s quest for vengeance, Arthur must form uneasy alliances, including one with his estranged half-brother Orm (Patrick Wilson). Together, they embark on a journey to uncover the secrets of the Lost Kingdom, a long-forgotten civilization hidden in the depths of the ocean. Along the way, they face monstrous creatures, ancient traps, and challenges that test their trust and courage.
