"Earth's mightiest heroes and the children of the atom go to war in the ultimate super-hero showdown! The world-destroying Phoenix Force is back, and while the Avengers are intent on stopping it, Cyclops and his X-Men have other ideas. To Captain America, the Phoenix threatens doom. To Cyclops, it could mean salvation. Marvel's two greatest leaders wage war, with the Phoenix's chosen host -- Hope Summers -- caught in the middle. How far are both sides willing to go? The answer lies in a battle so big no one world could contain it ... and a shocking ending that neither team could have seen coming! Marvel's top writers and artists present a space-faring, world-changing epic-- the culmination of a decade's worth of incredible event storytelling."--Page 4 of cover.

Contains material originally published in 2012 in single magazine form as Avengers vs. X-Men #0-12 and material from Point One #1.