The team goes to space with the Fantastic Four.
They all kill aliens together.
None of that is important.
What is important is that the Phoenix Force contacts Jean for the first time while they are out in space.
She feels “watched.” Then this happens:
It foretells her betrayal of her beloved.
It’s explained away as a dream, but we all know better, right?
Also: Bobby Drake finally got to the Savage Land–after the X-Men had already left–but has amnesia. And The Sentinels arise at the end of this arc.