The X-Men team that dwelled in outerspace for ages returns to earth, to Xavier's school. At the same time the earlier imprisoned X-Men team returns home, to Xavier's school. And (also at the same time) Iceman and his new "friends" Cecilia and Marrow go to Xavier's school. It's total chaos when everybody meets each other, while Cyclops got a serious problem: Bastion planted a dangerous bomb in his belly. With the help of Marrow, Wolverine and Sam, Cecilia rescues Cyclops. During the chaos Juggernaut himself visits the school. This results in even more chaos. All of this happens while the X-Men don't know how to handle the loss of Gambit and Bishop...