1st printing. Collects Age of X Alpha (2011 Marvel), X-Men: Legacy (2008 Marvel) #245-247, New Mutants (2009- 3rd Series) #22-24, Age of X Universe (2011 Marvel) #1-2 and the AGE OF X HISTORICAL LOGS. Cover by Leinil Francis Yu. In a world where the X-Men never existed, and mutantkind has been hunted to extinction, the few remaining mutants have banded together to make their last stand. They spend each day securing the walls of their stronghold, Fortress X, beating back the anti-mutant forces that would see them wiped out. But when a conspiracy is discovered within Fortress X itself, could it be that mutantkind's last bastion will crumble from the inside out? When the dust settles, no one will be left unscathed. Softcover, 256 pages, full color.