Calling together the Avengers and the X-Men, Xavier and Strange held a group meeting to determine the fate of Wanda Maximoff. Quicksilver, who was eavesdropping, feared that the inevitable choice would be to kill her. Fearing for his sister, he hurried to Genosha where he pleaded to his father to protect Wanda. Magneto was torn-- he was unsure what the right choice was. His decision seemed to have been made.
When the Avengers and the X-Men flew to Genosha to check in on Wanda, Professor Xavier disappeared and suddenly the world burned white, to be replaced by a mutant utopia where humans had become the minority ruled under the House of M. No one remembered the world as it had been, except for S.H.I.E.L.D. agent Wolverine and a girl named Layla Miller, who exhibited the ability to unlock people's subconsciousnesses, reminding them of the world as it had been.