The old X-Men quit, but Cyclops stays behind to lead the new team. Nefaria takes over Valhalla air force base, and the X-Men move in to stop him.; Scott's violent mourning for Thunderbird unleashes an alien demon on the X-Men. Moira comes to stay at X-Mansion. Lang tries to kill Rossi to keep Project Armageddon on track.; Eric the Red controls Havok and Polaris and sends them up against the X-Men. After having strange dreams of an outer space battle, Xavier leaves for vacation. Jean re-joins the team.; The X-Men have to battle the X-Sentinels to free their captured comrades. The space station is damaged in the fight, and Jean has to guide the Shuttle back to earth herself knowing the strain will kill her.