"The Justice League and the Suicide Squad--the World's Greatest Heroes and its worst--went to war. A team unlike any other rose from the ashes. Batman. Black Canary. Vixen. The Atom. The Ray. Killer Frost. Lobo. Some are heroes, some are villains and some exist in the gray area in between. But the Caped Crusader sees the potential in all of them to show everyday people that their superhuman guardians are just like them: capable of fighting for justice despite their flaws. Batman had better be right, because Earth is about to be invaded by a threat from beyond our universe. The tyrant called Lord Havok and his army of Extremists are out to make the planet safe again--by destroying the free will of all its inhabitants. Can this untested new Justice League help America fend off the Extremists' agenda? And can the Dark Knight contain the Main Man--the living weapon of mass destruction known as Lobo?"--Page 4 of cover.