After the events of Justice League: War, Ocean Master and Black Manta have declared a war against the surface in retaliation of the aftermath of Apokoliptian-tyrant Darkseid's planetary invasion. Queen Atlanna seeks out her other son, Ocean Master’s half-brother Arthur Curry, a half-human with aquatic powers with no knowledge of his Atlantean heritage, to restore balance. Living with powers he doesn’t understand and seeing the danger around him, Curry takes steps to embrace his destiny, joining the Justice League, and with his new teammates he battles to save Earth from total destruction.
Justice League: Throne of Atlantis is a 2015 American direct-to-video animated superhero film featuring the DC Comics superhero team the Justice League, which is the 22nd film of the DC Universe Animated Original Movies and the fourth film in the DC Animated Movie Universe. The film is loosely based on the "Throne of Atlantis" story arc from The New 52 written by Geoff Johns and serves as a standalone sequel to 2014's Justice League: War. In the film, Arthur Curry, a half-Atlantean prince, discovers his heritage and aids the Justice League in preventing a war between the surface dwellers and the Atlanteans orchestrated by his half-brother Ocean Master. The film was released for download on January 13, 2015 and was released on Blu-ray and DVD formats on January 27.