In this last issue before the Onslaught Event, Onslaught begins making contact with the X-Men, starting with Jean Grey and trying to convince her to join him. In the course of the psychic conversation, Jean begins to suspect a strong connection between Onslaught and Professor X.
We also finally learn that the real Beast did not die when Dark Beast trapped him behind a wall at the Mansion. (It’s been Dark Beast appearing in X-books ever since then, posing as Hank McCoy, and I’m certain I’ve mistagged some of those appearances.). Turns out, he was left with a machine that feeds him and gives him water. He begins to plan his own escape.