Too big to be contained...the grand finale of Joss Whedon and John Cassaday's landmark run is right here! The powerlords of Breakworld bring the fight to Earth. Can the X-Men stop them from destroying the whole planet?

The last chapter of Joss Whedon and John Cassaday's landmark run is here! The powerlords of Breakworld bring the fight to Earth. Will the Avengers join their fight? What we do know is this: one of the X-Men won't walk away from this fight.

Now in one titanic tome: the entire chart-topping run of super-team Joss Whedon and John Cassaday Winner of multiple prestigious Eisner Awards, Whedon and Cassaday's Astonishing X-Men was a smash hit with critics and fans alike from the very first issue - winning praise from dozens of top media outlets including Entertainment Weekly, Publishers Weekly, TV Guide, and New York Magazine, as well as racking up nearly every major comic-book industry award. Buffy the Vampire Slayer creator Whedon and Cassaday (Captain America, Planetary) assembled a tight cast - Cyclops, the Beast, Wolverine, and Emma Frost, joined by returning fan-favorite Kitty Pryde - and set forth a groundbreaking pace, from the opening pages of a Sentinel attack to the unexpected return of a beloved X-Man. Then, building on early momentum, they ratcheted up the danger and drama with a shocking second year, creating a must-read book that can truly be called "astonishing " Collects Astonishing X-Men #1-24, and Giant-Size Astonishing X-Men #1.