CROSSOVER PART 1 Reed Richards has found a way to travel to an alternate Earth in another dimension. Being the imaginauts they are, the Fantastic Four set out on a mission of ultimate discovery -but discover the Marvel Zombies.
Overview
"Crossover," part 1 of 3. Ultimate Starts Month begins here! Mark Millar returns to Ultimate Fantastic Four, and he's brought X-Men: Phoenix Endsong superstar Greg Land with him! Even in their short careers, the Ultimate FF have seen a lot of amazing things but nothing will prepare them for the world they're about to enter! Reed Richards has used his scientific genius to contact an Earth in a surprisingly familiar parallel dimension and he's ready to visit.
— Description from Comic Vine community (comicvine.gamespot.com).
