Based on the hit TV series! FreezeFrame books are packed with still frames from the TV show to dynamically engage reluctant readers. Bursting with frames from an episode of Justice League Unlimited, fascinating facts about favorite super heroes and villains, and lively storytelling, this fully immersive experience will make kids feel like they are in the center of the action with Batman, Superman, Wonder Woman, and Green Lantern as they battle the bad guys and save the day! As alien invaders who were accidentally awakened on Mars begin to take over the Earth, Superman and Batman rescue J'onn J'onzz who telepathically summons Wonder Woman, Hawkgirl, the Flash, and Green Lantern to defeat the invasion. Superman gathers everyone at the newly built Watchtower and asks to be part of a team, which he dubs the Justice League.