"OUR WORLDS AT WAR," Part 13. Imperiex has initiated his first strike on Earth. Now Earth's first line of defense, the JLA, is going full throttle against him and his probes. But what happens when the World's Greatest Heroes are not enough? Witness the full impact on Earth as the War against Imperiex begins and one battle is quickly lost in a big way!
— Description from Comic Vine community (comicvine.gamespot.com).
