An all-star cast provides the voices of Superman, Batman, Wonder Woman and other classic superheroes in this animated epic that reveals the origins of the Justice League, a group of strangers united to fight an evil none can conquer alone. Based on the graphic novel by Darwyn Cooke, the film also features the vocal talents of Lucy Lawless, Neil Patrick Harris, Miguel Ferrer, Brooke Shields, David Boreanaz, Kyra Sedgwick and more.