The X-Men and their fellow Mutants have been enjoying an extended period of peace and prosperity since Professor X, Magneto, and Moira MacTaggert founded the island nation of Krakoa. Unfortunately, that peace was shattered by Orchis’ savage attack at the X-Men's 3rd Hellfire Gala. Krakoa now has a population of only one: Professor X, who fled to the island after the Gala. The rest of Earth's Mutants died in the Krakoan gates at Professor X's command. At least, that’s what Xavier believes. Unknown to him, the person who may be Mutantkind’s salvation is also on the island, hidden by others trying to protect Mutants and their future.
Source：https://www.cbr.com/fall-of-x-professor-x-krakoa-salvation-manifold/
