"X-Men: Dark Phoenix" is a 2019 superhero film based on the X-Men comic book storyline. It follows Jean Grey, a powerful mutant, as she struggles with her emerging abilities after a space mission goes wrong. This incident awakens a dark force within her, leading to conflict among the X-Men team. As Jean becomes increasingly unstable, her friends, including Professor X and Cyclops, must confront the consequences of her transformation. The film explores themes of power, identity, and the struggle between good and evil, culminating in a battle that tests the bonds of friendship and loyalty among the X-Men.