When the Earth was invaded by an army of Parademons, led by their horrifying leader, Darkseid. 7 heroes, Superman, Batman, Wonder Woman, Green Lantern (Hal Jordan), The Flash (Barry Allen), Aquaman, and Martian Manhunter, joined together to form the Justice League, defeated Darkseid and save the world. But after a whole year of small crimes, evil has once again returned to threaten the Earth, forcing the heroes to join together again with two new members, Green Arrow and Hawkman!
