In this film we are told the story of Orm and Black Mant who plan some movements to attack the people on the surface, since they were invaded by the army of Apokopis, which left them very weak. The queen of Atlantis decided to take revenge, in addition, to go searching for her son Arthur. The latter is living on the surface and does not know that he is an extremely powerful person with extraordinary powers. However, he will completely distance himself from his mother’s plans to become Aquaman and join the Justice League, in which the most powerful superheroes are found. Thus our protagonist will save and unite all the possible people in company with their companions.