In the wake of the Marauders' Mutant Massacre, the X-Men go mobile to plan their next move - but recruiting Dazzler and Havok brings them even more catastrophe! And with a teammate's life on the line, the mutant marvels are forced to fight the Fantastic Four and seek the genius of Doctor Doom! Another elite X-saga of the eighties concludes with the world-shaking Fall of the Mutants! Plus: the introduction of... the X-Babies!? The cosmic power of... Wolverine!? Featuring Sabretooth, the Juggernaut, Mystique, Captain Britain and more! Collects Uncanny X-Men #214-228; Annuals #10-11; Fantastic Four Vs. The X-Men #1-4.