"As the mutant population dwindles to a mere 181, the messianic girl named Hope returns from the future, carrying with her the hope of repopulating the mutant race. But Bastion, a highly evolved mutant-hunting Sentinel robot, lies in wait. He's acquired an alien virus that allows him to reanimate and control some of the X-Men's deadliest enemies - including Bolivar Trask, the creator of the Sentinels himself! And Bastion has ordered Trask to kill the mutant detective team X-Factor! Meanwhile, the X-Man known as Magik has been cast into Limbo. Cannonball assembles an emergency rescue squad to get her back home and out of the clutches of the archdemon N'astirh. But when N'astirh bargains with the X-Man known as Pixie for the return of her soul, will Pixie be Magik's rescuer? Or her murderer?"--Publisher description.

Contains material originally published in magazine form as X-Men: Hope, X-Men: blind science, X-Men: hellbound #1-3 and X-Factor #204-206.