"The squad is catapulted into action when the lethal Legacy Virus goes missing, threatening the lives of every mutant on the planet. Wolverine and the young X-23 must attempt to hold the team together as the brutal, damaged histories of Wolfsbane and Archangel threaten to tear everything apart, starting with each other. Meanwhile, clouds are gathering on the horizon, as the mutant-hating cyborg Bastion places many of the X-Men's greatest threats back into positions of power ..." --P. [4] of cover.

"Contains material originally published in magazine form as X-Force #7-11."