Fantastic Four #28

PROLOGUE TO ONE WORLD UNDER DOOM! It's been months since Doctor Doom became Sorcerer Supreme - and disappeared. Reed Richards, the smartest man on the planet, has spent that time trying to find a way to understand magic, so he can find and stop Doom...and he's failed. But when Sue suggests there is another man who holds both a graduate degree in physics and an understanding of magic - Dane Whitman, the Black Knight! - Reed and Sue decide to see if he can offer any insights. Dane's help sends Reed and Sue's minds back in time - to possess the bodies of two people in the past, where, without their powers, they search for the one magical item that can cut through Doom's illusions! But the Black Knight has motivations of his own...and the past isn't what it used to be.