Secret OriginsOriginal Airdate: November 17, 2001
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When an astronaut accidentally frees imprisoned aliens on Mars, he unknowingly starts the beginning of an alien invasion of Earth! Two years in the future, Batman and Superman begin to investigate strange occurrences around Metropolis and Gotham. Not only are seemingly alien events happening around the world, but also Superman begins experiencing immense psychic pain. It?s not long before the Earth comes under full attack by Alien invaders. Superman and Batman do the best they can against the invaders, and Superman soon realizes that his pain is an outside force that is contacting him. Superman and Batman meet up with J?onn J?onzz, The Martian Manhunter, who explains that the aliens are race of parasites that wiped out his people. He managed to stop them and imprison them, but they were set free. J?onn summons other superheroes to help the defense of Earth, but they all fall captive to the aliens. Batman becomes the first superhero casualty of the alien war.
As the alien leader, the Imperium, lands on Earth to confront the captive heroes, J?onn reveals that he?s been keeping Batman psychically hidden the entire time. Batman starts a chain reaction that disables the alien buildings, and allows sunlight to shine into the structures. The harmful UV radiation is toxic to the nocturnal aliens, and the League is easily able to defeat them once their weakness is revealed.
In the aftermath of the destruction, Superman realizes that defending the Earth is too big of a job for one man. The superheroes agree that the only way Earth will be safe is if they permanently join forces in as a Justice League.
"I'm expected back in Metropolis"
"Another Key to the City?"
?Don't take it personally J'onn he[Batman] doesn't trust anyone?
?A wise Policy?
?I believe that if we stay together as a team, we would be a force that could truly work for the ideals of peace and justice.?
?What like a bunch of super friends??
?More like a Justice League.?
?Do you have any idea how corny that sounds??
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