Who can stop the future X-Men from killing today’s Fantastic Four? Who else…the future Fantastic Four!
Witness the revelations that have torn this young family of adventurers apart. And this is only the beginning as Ultimatum changes the very landscape of the Ultimate Universe!
To be concluded in Ultimate Fantastic Four/Ultimate X-Men Annual #1
— Description from Comic Vine community (comicvine.gamespot.com).
