In DARK PHOENIX, the X-MEN face their most formidable and powerful foe: one of their own, Jean Grey.
Yes, she wiped out a couple of alien planets as Dark Phoenix.
During a rescue mission in space, Jean is nearly killed when she is hit by a mysterious cosmic force.
It’s so weird that we now have two movie versions of the Dark Phoenix Saga, and both of them involve Jean Grey wearing leather jackets and murdering her friends when that is not really what the original comics were about.