When an old foe returns, Wonder Woman and Artemis are sent hurtling through time to meet their destinies! But what does the Time Master want with Mars Isle, and how will his interference affect the island’s future? Meanwhile, meet a new member of the Wonder Family! Introducing Cassie Sandsmark, the new Wonder Girl!
In the alternate future timeline of the Adult Legion of Super-Heroes, the good fight continues with new members such as Lexor Man and Mr. Mxyztic. But even grown-up Legionnaires can be fooled, as shown when they are manipulated by Lightning Lord and Saturn Queen into letting them go free. Meanwhile, a new threat is on the horizon when a rogue Coluan with thirteenth-level intelligence who calls himself the Computyrant begins reassembling the Legion of Super-Villains!
As Timber Wolf takes Lightning Lass as his wife, sinister foes try to take the Legionnaires’ very lives when Lightning Lord returns seeking vengeance on the world that rejected him! But as the Legion of Super-Heroes struggles to deal with the apparent return of Validus, it must also contend with a desperate criminal couple from a possible future!
As the remaining Earths begin to merge together, Brainiac and Lex Luthor of Earth-One have a plan to take them all! With an army of super-villains gathered from all five Earths, they mount a carefully planned invasion of Earth-Four, Earth-S, and Earth-X, swiftly defeating those worlds’ heroes. An army of super-heroes from Earth-One and Earth-Two soon arrive to free the other three Earths, but with the numbers favoring the villains, can the heroes rally to beat the odds? Guest starring the Justice League of America, the Justice Society of America, the New Teen Titans, the Outsiders, Infinity Inc., the Doom Patrol, the Marvel Family, the Freedom Fighters, and the Sentinels of Justice!