The body count rises higher than ever as the X-Men and their allies face war on every front! X-Factor comes up against their deadliest challenge yet in Apocalypse and his Horsemen, including the all-new - and all-too-familiar - Archangel! The New Mutants lose one of their own on an island of horrors! The X-Men take on the lethal Marauders... and the survivors will be asked to sacrifice themselves to stop the demonic Adversary! Featuring tie-ins starring Captain America, Daredevil, the Fantastic Four, the Hulk and Power Pack, it's one of the most devastating X-overs of all time! Collecting: New Mutants (1983) 55-61; Uncanny X-Men (1981) 220-227; X-Factor (1986) 18-26; Captain America (1968) 339; Daredevil (1964) 252; Fantastic Four (1961) 312; Incredible Hulk (1968) 336-337, 340; Power Pack (1984) 35.