They trace the Phalanx to Apocalypse 's facility , where he has allowed the virus to spread .
Magneto then allies with the X-Men in preventing the Phalanx from taking control of Earth by assimilating all of its inhabitants .
inhabitants trace the Phalanx to Apocalypse 's facility , where he has allowed the virus to spread .
Magneto then allies with the X-Men in preventing the Phalanx from taking control of Earth by assimilating all of its inhabitants .