The X-Men face their most formidable and powerful foe when one of their own, Jean Grey, starts to spiral out of control. During a rescue mission in outer space, Jean is nearly killed when she's hit by a mysterious cosmic force. Once she returns home, this force not only makes her infinitely more powerful, but far more unstable. The X-Men must now band together to save her soul and battle aliens that want to use Grey's new abilities to rule the galaxy.

Dark Phoenix ends an era of the X-Men franchise by taking a second stab at adapting a classic comics arc -- with deeply disappointing results.

'X-Men: Dark Phoenix' received mixed reactions, highlighting both positive and negative aspects. Many praised the visual effects, action sequences, and performances, particularly from Sophie Turner, James McAvoy, and Michael Fassbender. However, criticisms included a rushed storyline, lack of character development, and inconsistent tone. Some felt the film failed to capitalize on the rich source material and iconic storyline. Despite these issues, some found it enjoyable and a decent conclusion to the Fox X-Men series.