Old soldiers may fade away, but so do young mutants! On the verge of disintegration, Kitty Pryde seems resigned to her doom - but the X-Men will do anything to save her, even bargain with a worse doom...DOCTOR Doom! What stunning secret prevents Mister Fantastic and the Fantastic Four from saving the day instead? Is he terrified of failing because his greatest failure, the fateful rocket flight, might have really been his greatest success? Do the answers all come down to wunderkind Franklin Richards? Plus: the classic tale of the two teams' original face-off in Marvel's early era! This title collects "Fantastic Four vs. the X-Men" numbered 1-4, and "Fantastic Four" numbered 28.