"Rage Against the Machine, Part 1: Crossed Wires"
The X-Men manage to escape the skrull training moon just in time as they can not stop Galactus from eating the world. Meanwhile back on Earth, SHIELD has continued experimenting on cybernetic life as Nick Fury finally finds out and confronts the director to no avail. The X-Men return to earth and arrive on Muir Island but something is wrong, the land has been assimilated by Douglock (the combination of Doug Ramsey and Warlock).
SPOILER: It was revealed in Uncanny X-Men (1981) #375 that the Wolverine in this issue was a Skrull imposter.