Sometimes the job is too big for just one hero.
The greatest superheroes of all time team up to battle for truth, justice and freedom in the first Justice League movie, Secret Origins.
Martian Manhunter comes to Earth to warn of an impending alien invasion. With the help of Superman and Batman, he enlists the world's greatest heroes including Wonder Woman, The Flash, Green Lantern and Hawkgirl to fend off the unstoppable invading armada.
From the creative team behind the Emmy Award-winning The New Batman/ Superman Adventures, watch for the Justice League on Cartoon Network.