Mephisto tries to abduct one member of the Fantastic Four after another into his realm, forcing Sue to make a difficult choice.
Mr. Fantastic enlists the aid of X-Factor in order to rescue Sue's soul from Mephisto!
Mr. Fantastic warns the X-Men of Mephisto's soul-stealing rampage. Rogue has a plan to stop him, but does it play right into his hands?
After skirmishes with the Fantastic Four, the X-Factor and the X-Men, Mephisto turns his attention to a new foe: the Avengers.
