*The end of the Ultimate Universe is nigh. Now, see how it all began! This handy primer reaches all the way back to Ultimate Spider-Man #1 and Ultimate X-Men #1 with stops along the way for Ultimate Fantastic Four; The Ultimates 1, 2 and 3; Ultimate Origins; the Ultimate Annuals; and more recapping all the key beats leading up to the Ultimatum event!* Source: Marvel.com