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Adapted from the six-issue comic book series originally published in 2004, the animated adventure Justice League: The New Frontier follows the epic adventures of Superman and his fellow DC Comics superheroes from the end of World War II to the global tensions of the Cold War. In addition to detailing the ultimate fate of DC war comic squadron The Losers and showing how reluctant fighter pilot Hal Jordan made the stunning transformation into The Green Lantern, the film also follows Superman and Wonder Woman as they struggle with their involvement on the East Asia battle arena, finds the Martian Manhunter arriving on planet Earth, and showcases John Henry's valiant struggle against the evil Ku Klux Klan.