Collects X-Men (2021) #1-6. The heroes of Krakoa are here to save the planet! Things might be complicated between the new mutant nation and the rest of the world, but it's simple to the X-Men: You do what's right, you protect those who need protecting and you save the world we all share. Cyclops, Marvel Girl, Sunfire, Rogue, Wolverine, Synch and Polaris are the chosen champions of mutantkind, and they will not shrink from any battle. But as threats emerge from all sides, these fearless X-Men fight an unstoppable wave of annihilation - and dangers lurk in the darkness! From the obsessed High Evolutionary to the bizarre Cordyceps Jones, from Orchis' Dr. Stasis to the horrifying Headless Horseman, the X-Men battle on! But who is Captain Krakoa? Writer Gerry Duggan charts a new course for the X-Men in the Reign of X!