An old foe of the X-Men, the robot Bastion has assembled a team of bigots whose hatred of mutants rivals his own. Using them as his pawns, he has begun to put his malicious plans into action. Weaponizing the Legacy virus--a scourge that one nearly wiped out mutants--Bastion is spreading the virus, causing mutants to self-destruct while causing mortal damage. The X-Force is on hot on his trail, as he has kidnapped three young mutants, close friends of the team. Meanwhile, Cyclops has learned the location of what could be the mutants last hope. Will the X-Force abandon their friends to seek it out?