"First & Last, Part 2"
Continues from Uncanny X-Men (1981) #378.
In the distant future, heroes from across the galaxy gather to pay tribute to Charles Xavier. At the base of Alliance-X, the intergalactic force protecting the galaxy, old friends and enemies meet years after having gone their separate ways.
But all is not well, as the aging Professor is dying from the Legacy virus. But there seems to be a possible cure. The assembled heroes must unload their full power into a Shi'ar device. But something is wrong...
This is another of the realities created by Apocalypse in an attempt to gather the energies of The Twelve to facilitate his rebirth. And this time it has almost worked.
After returning to the current reality, the X-Men must carry on. But Jean cannot let go of the chance that Scott is still alive and leaves the X-Men.