The combined forces of the Justice League of America, the Justice Society of America, and the Freedom Fighters — heroes from three different Earths — work together to save their planets from a dangerous force called the Cosmic Tree. But can even the combined forces of the JLA, the JSA, and the Freedom Fighters stop its spread into other dimensions? Enjoy this untold team-up tale of the greatest heroes of Earth-One, Earth-Two, and Earth-X!
On the heels of the alien invasion, the JLA faces more attacks from two fronts as the Martians and Atlanteans join forces to take over the world! Several special guest stars rally to the League’s side, but will they be enough to win the day?