Argumento
Collects The Uncanny X-Men (1963-2011 1st Series) #210-219, Uncanny X-Men (1963-2011 1st Series) Annual #11, X-Factor (1986-1998 1st Series) #9-17, X-Factor (1986-1998 1st Series) Annual #2, New Mutants (1983-1991 1st Series) #46, Thor (1962-1996 1st Series) #373-374 and 377-378, Power Pack (1984-1991 1st Series) #27, Daredevil (1964-1998 1st Series) #238, Fantastic Four vs. X-Men (1987) #1-4 and X-Men vs. the Avengers (1987) #1-4.
Cover by John Romita, Jr. and Bob Wiacek.
The first X-Men crossover event - and still the most brutal! When Sabretooth and the lethal Marauders attack the underground outcasts known as the Morlocks, the X-Men, X-Factor and New Mutants join forces to stop them - with help from Thor, Daredevil and Power Pack! But the cost of victory is high, and many X-Men come away badly injured. While Shadowcat might be saved with the Fantastic Four's help, the Angel contemplates a much bleaker fate! Psylocke, Longshot and Dazzler join the undermanned X-Men - just in time to clash with the Avengers - as Marvel's mutants struggle to recover and rebuild!