In advance of Marvel's First Family arriving on the big screen this summer, Ryan North and Humberto Ramos craft an unusual story in which the Fantastic Four respond to a most unusual interdimensional summons! And on the eve of the birth of the All-New, All-Different X-Men, there is one extra mutant in attendance. WHO is it? Only Collin Kelly and Jackson Lanzing can tell you! Plus, ANOTHER surprise from Chip Zdarsky! We're simply too good to you!
— Description from Comic Vine community (comicvine.gamespot.com).
