The Avengers and the X-Men are faced with a common foe that becomes their greatest threat: Wanda Maximoff! The Scarlet Witch is out of control, and the fate of the entire world is in her hands. Will Magneto help his daughter or use her powers to his own benefit? The stunning conclusion will be felt for years to come in the Marvel Universe! Starring the Astonishing X-Men and the New Avengers!