Things go from peculiar to just plain bizarre as Emma Frost's erratic behavior sends the X-Men spinning in a nonstop downward spiral. Will an unlikely union be the final straw? After secretly lying in wait for months, the new Hellfire Club makes its move! Plus: The X-Man destined to destroy the Breakworld stands revealed! Who is it, and what will be their fate? And will the X-Men be able to protect Earth from certain destruction at the hands of the Breakworld? When it's all over, nothing will ever be the same!