Ultimate X-Men/Ultimate Fantastic Four (2005)

Cerebro has been stolen-and the trail points directly at the government's premier think tank, the Baxter Building! The X-Men aren't happy about it-especially after the shattering events of last month's Ultimate X-Men issue. And the Baxter Building's most famous residents-the Fantastic Four-aren't happy about an angry team of mutants showing up on their doorstep!