The Justice League of America, an organization of superheroes, struggles to save the world from a group of evil aliens called the Hyperclan.

The World’s Greatest Heroes have faced countless threats and the deadliest of enemies and have barely come out alive each time. So what happens when Mageddon — the doomsday weapon of the Old Gods — attempts to end all of existence…at the same time the JLA’s greatest foes band together as a brand new Injustice Gang? World War III is upon us and could be the end of the Justice League…and the world. This volume collects JLA #32-46.

The Justice League faces off against Lex Luther's newly assembled Injustice Gang while the fate of the Earth itself hangs in the balance. Plus, the heroes must race through time to stop a threat to all eternity: the evil god Darkseid.

"The pantheon of the World's greatest Superheroes -- Superman, Batman, Wonder Woman, The Flash, Green Lantern, Aquaman, an dMartian Manhunter -- are Earth's first line of defense against the high-priority threats facing mankind. As the most powerful beings on the planet, the JLA are a force to be reckoned with -- which doesn't stop them from being continaully attacked by alien invaders, renegade angels, or their deadliest enemies"--Back cover.

Relive the legendary 1990s JLA series, written by comics mastermind Grant Morrison (FINAL CRISIS) with stunning art by Howard Porter and others, in this amazing oversized softcover collecting JLA #1-9 and SECRET FILES AND ORIGINS #1! The action begins as the JLA reunites to stop the Hyperclan, who have come to Earth posing as a new group of super heroes. But as their true nature comes to light, only the World's Greatest Super Heroes can stop them! Standing side by side, Batman, Superman, Wonder Woman, Aquaman, The Flash, Green Lantern and the Martian Manhunter take on alien posers and come to realize that Earth needs a protectorate made up of only the mightiest icons!

The event that the New 52 has been building towards since the beginning! #1 New York Times best-selling writer Geoff Johns (GREEN LANTERN, BATMAN: EARTH ONE) brings together almost two years of plot threads for an epic tale that will forever change the shape of the DC Universe. When the three Justice Leagues go to war with one another, who's side will everyone be on? Allies will be born, friends will become enemies and the DC Universe will never be the same. This volume collects JUSTICE LEAGUE #18-23.

THE JUSTICE LEAGUE IS VICTORIOUS. NOW THE TRUE BATTLE BEGINS! Far beyond the realms of our understanding lies the sixth dimension--the control room of the Multiverse, where cosmic beings set our fates in motion long ago. Now, with our Multiverse hurtling toward a final judgment it will not survive, our only hope lies in the sixth dimension. No mortals have ever visited it...but the Justice League are no mere mortals! Through the doorway to the sixth dimension, the Justice League discovers a future version of Earth, where the hard choices have already been made and the Multiverse has already been saved. All they need to do now is accept this gift, and their battle will be over. But the easy choice is never as easy as it seems. As the Justice League learns the terrible secret of this seeming paradise, Superman must fight to free himself from an impossible trap--a universe designed just to imprison him. With a powerful being and an entire world aligned against our heroes, will the fate of the Justice League and the entire Multiverse come down to an assist from the Legion of Doom? Tying into DC's "Year of the Villain" event, Scott Snyder (BATMAN: LAST KNIGHT ON EARTH), Jorge Jimenez (SUPERMAN), Javier Fernandez (GREEN ARROW), James Tynion IV (JUSTICE LEAGUE DARK) and Francis Manapul (THE FLASH) take the World's Greatest Super Heroes past the thresholds of imagination, into previously uncharted territory! Collects JUSTICE LEAGUE #19-28.