In "X-Men: Dark Phoenix," directed by Simon Kinberg, the X-Men face their most powerful enemy yet when Jean Grey is exposed to a cosmic force that amplifies her abilities to dangerous levels. As Jean struggles to control her newfound powers, she becomes the Dark Phoenix, threatening the existence of both mutants and humanity. The X-Men, led by Professor Xavier, must confront their friend's inner turmoil while facing external threats, including a shape-shifting alien race led by Vuk. With stakes higher than ever, the X-Men must grapple with moral dilemmas and make sacrifices to save Jean and prevent the Dark Phoenix's catastrophic rampage.