"FOR WHAT THEY HAVE DONE, THEY WILL PAY THE ULTIMATE PRICE" - Magneto
This is it, the ultimate universe is breaking down on all of us and everyone we once knew is nearly gone. Legends will die in the storms of chaos and many lives will be lost in the never ending waves of death. It is here that our heroes must face their darkest hour in the upcoming war of the ultimate universe.
Collected in Ultimatum.
Non-U.S. Collected Editions