Collects X-Men (2019) #10-12 and #16-21, Giant-Size X-Men: Magneto, Giant-Size X-Men: Fantomex and Giant-Size X-Men: Storm. Visionary writer Jonathan Hickman completes his revolutionary reimagining of the X-Men! The Summers family has made a home for itself on the moon, but now some new neighbors have moved in - and the trees are killing the children! Then the Shi'ar Empire asks the X-Men for help - and Cyclops, Storm and Marvel Girl answer the call! Elsewhere, the door to the Vault swings open at last - and for the beings who emerge, it's been a very, very long time since they entered! And Krakoa's future is at stake when one of mutantkind's greatest threats returns: Nimrod is online! Meanwhile, it's time for the Hellfire Gala - and a changing of the guard, as Krakoa's first team of elected X-Men debuts! Plus: thrilling tales starring Magneto, Fantomex and Storm!