The X-Men are reunited with Professor X, who asks them to help overthrow the Shi'ar tyrant Deathbird ... but all is not as it seems, and the X-Men must deduce the truth before it's too late! Meanwhile, sparks fly as Rogue and Magneto team up to save the Savage Land! Then, the X-Men and X-Factor unite to battle the Shadow King ... but the price of their victory is more than Professor X can stand! And as a new team rises from the ashes of the old, Magneto draws a dangerous line in the sand to protect his fellow mutants -- leading to a truly explosive finale, and the end of an era!