The most uncanny team of X-Men yet continue to fight for homo superior! But someone is weaponizing mutants and turning them loose on the enemies of mutantkind. How will the X-Men react? Meanwhile, Magneto's uneasy allies discover that the master of magnetism has not been altogether forthcoming about the means he's been employing to protect his race. To find out what exactly he has been up to, the X-Men investigate - and the trail starts at the all-new, all-different Hellfire Club!