This book wasn’t great when Chris Claremont was writing it—now there’s someone else.
Mastermind tries to trick Rachel Summers into thinking that he’s the adult Franklin Richards from her own future timeline (remember, Rachel is in our time after having come back here from the Days of Future Past timeline). Last issue Galactus came for Rachel’s Phoenix power, this time it’s Mastermind. I’d like to see them do something else with this character.
Anyway, she trashes him and literally fries his brain. He ends the issue comatose.