"There's Something Awful on Muir Island!"
Jean works with Moira on Muir Island as they try to understand the Phoenix. Meanwhile, back at the mansion, things are not going well for the X-Men as they still are not working as a team. Above the Earth on Asteroid M, Magneto recovers from his last encounter with the X-Men. Xavier is coming home after being neglected by the new Shi'Ar Empress, Lilandra, and his need to warn Jean about the power of the Phoenix. Back on Earth, Jason Wyngarde plots to turn Jean Grey into the Hellfire Club's Black Queen as Jean is pulled into an illusion of the 18th Century. Back at the mansion, Hank learns that the X-Men are alive as he tells Scott that Jean is still alive and well. But there is more trouble on Muir Island as Mutant X is loose and Scott and the team must race across the ocean to find out what's going on.
Magneto is revealed as the true father of Quicksilver and the Scarlet Witch.