The mutant-finding machine supreme-Cerebro-is in the devious hands of the Mad Thinker, who, with her newly-acquired powers, seems impossible to thwart! Even the combined strength of the Fantastic Four and the X-Men mean nothing in this epic conflict. But will a chance for victory come from the most unexpected source imaginable?

It's just a normal typical day here in Xavier's place and while the rest of the team investigate an event, Kitty Pryde, alongside her pals Wolvie and Iceman are given the honor to guard the mansion. But who's knocking on their doorstep? Well, if it isn't a lovely A.I.M. hit-woman named the Mad Thinker, and she kindly dropped by to steal Cerebro for her bosses. But, could it be the World's First Superhero Family who could have stolen it? Read the issue to find out!