In the months since Orchis declared open war on mutantkind all around the globe, the survivors of the attack on the Hellfire Gala have done everything they can to stave off complete and total genocide. Unfortunately, what the future holds for those lucky enough to live and fight another day is worse than anything they have been through so far. Of course, there is still one last hope for the world's mutants to be saved, and all it will cost them is quite literally everything they have spent the last decade fighting so desperately to achieve.
Source:https://www.cbr.com/fall-of-x-powers-of-x-last-hope-for-mutantkind-moira/