In a world where deep waters hide secrets and fantastic kingdoms, Arthur Curry, a hybrid between human and Atlantean, discovers that he is destined to be the king of Atlantis. The son of the Atlantean queen Atlanna and a human lighthouse guard, his life has been marked by the struggle between two worlds. Since childhood, he has had the ability to communicate with fish and has developed superhuman strength, but he feels trapped between his heritage and his life on the surface.
When his half-brother, Orm, plans to unite the seven oceanic kingdoms and declare war on humanity, Arthur is forced to confront his legacy. With the help of Mera, an Atlantean warrior with exceptional abilities, Arthur embarks on an epic journey to reclaim his throne and stop Orm. Together, they face incredible creatures, from sea monsters to ancient warriors, as they unravel the ancient mysteries surrounding the lost trident of Atlan, the king who once united Atlantis.
Through dazzling underwater landscapes and epic battles, Arthur learns to embrace his identity, explore the relationship between both worlds, and confront his destiny. The journey becomes a struggle not only for his kingdom but also for redemption and understanding of his own humanity. Facing his fears and the past, Arthur must decide if he is the hero that Atlantis needs.