Days of Future Present

A Fantastic Four/X-Men crossover! When an adult Franklin Richards travels back from the year 2017 to repair perceived "inaccuracies" in his timeline, he triggers a Sentinel program that awakens Ahab, the mutant hound-master. And Ahab is dead set on apprehending the adult Richards… in order to ensure that North America falls under the complete and total control of the Sentinels.