Vengeance is thine

"An unexpected arrival from the stars brings a dire warning to the Justice League: a new breed of conquerors is on the march. Led by Superman's nemesis the Eradicator, a genetically engineered, super-powered strike team has come to subjugate Earth. To aid the Justice League, Batman makes the unprecedented decision to enlist an ancient, unrivaled power, which calls into question who, exactly, is in charge. With the League on unsure footing, will they be ready to save the world?"--