With one of their own incarcerated, the X-Men move on Graymalkin Prison in order to free their teammate. But it's not just one team — in Alaska, Cyclops' X-Men scramble a rescue mission, while in Louisiana, Rogue's X-Men move to strike out on their own sortie. Doctrinal rivals each with their own objective, will these two fractious teams find themselves at cross-purposes? After all... an "X" is made by two lines crossing.