Two years have passed since the X-Men split up after the Civil War. Magneto severely injures Wolverine by ripping the adamantium metal from his skeleton during a fight. Professor X has had enough of Magneto's violence and retaliates by putting him in a coma. However, Magneto's essence transferred into Professor X's mind to create the evil entity, Onslaught. The X-Men have no choice but to reunite, and fight their mentor, the man who trained them into the team they were always meant to be, to save him from Onslaught. (Based on the "Fatal Attractions" & "Onslaught" storylines)
