Like many of Chris Claremont’s stories, this one lacks a firm center and touches on a whole bunch of subplots.  Main idea, though, is that the X-Men are being watched over by Valerie Cooper’s sentinels so they have to sneak around if they want to fulfill their traditional mission of protecting mutants.  It introduces the idea that mutants who aren’t on the team–and therefore aren’t living at the mansion (like Storm)–are particularly valuable now.

Rachel Grey–whose entire family was wiped out during last arc–sneaks out to see a shrink and then gets attacked by Shi’Ar Commandos.  The X-Men and Cooper’s Sentinel group team up to fight them off.