The first attempt at adapting The Dark Phoenix Saga for film, X-Men: The Last Stand, didn’t go well, so Dark Phoenix is aiming to do better.
Jean losing control of her powers will divide the X-Men and even result in at least one major character being killed.
Since this will almost certainly be the last of the main X-Men movies before 20th Century Fox is absorbed into Disney, it looks like Dark Phoenix is aiming to end this saga with a bang.
This time around, Jean Grey’s corruption will take place in 1992 after a solar flare hits the X-Men during a mission in space, and while it still won’t be quite the cosmic affair that the original comic book storyline was, at least Dark Phoenix will involve aliens, specifically, Jessica Chastain’s shapeshifter character.