Feature-length animated adventure featuring the DC Comics team of superheroes known as the Justice League. After the death of his father, Arthur Curry (voice of Matt Lanter) discovers that he is an Atlantean prince and heir to the throne. When his half-brother Orm (Sam Witwer) launches an attack on the surface world with the help of the villainous Black Manta (Harry Lennix), Arthur becomes known as Aquaman and joins forces with the Justice League heroes, including Superman (Jerry O'Connell), Batman (Jason O'Mara), Green Lantern (Nathan Fillion) and Wonder Woman (Rosario Dawson). Can they put a stop to the war?