J'onn Jonzz, the Martian Manhunter, comes to Earth to warn of an impending alien invasion. With the help of Superman and Batman, he gathers the world's greatest heroes to fend off the seemingly unstoppable invading armada. Part 1 of 3.

J'onn Jonzz, the Martian Manhunter, comes to Earth to warn of an impending alien invasion. With the help of Superman and Batman, he gathers the world's greatest heroes to fend off the seemingly unstoppable invading armada. Part 3 of 3.

A squad of indestructible androids called the Manhunters arrives on Earth and arrests Green Lantern for interstellar atrocities and abuses of power. While the Manhunters take Green Lantern to appear before an intergalactic tribunal the Justice League comes to his defense trying to prove his innocence. Part 1 of 2.

A squad of indestructible androids called the Manhunters arrives on Earth and arrests Green Lantern for interstellar atrocities and abuses of power. While the Manhunters take Green Lantern to appear before an intergalactic tribunal the Justice League comes to his defense trying to prove his innocence. Part 2 of 2.

When Superman convinces Aquaman, the king of Atlantis, to come to the surface world to negotiate a peace treaty on behalf of his people, Aquaman's evil half-brother, Orm, takes advantage of his king's absence to seize control of Atlantis. With the help of the Justice League, Aquaman must reclaim his throne before Orm can launch an all-out war against humanity. Part 1 of 2.