The climax of the film centers around the powerful mutant Apocalypse (Oscar Isaac) and his plan to reshape the world by transferring his consciousness into the body of Charles Xavier (James McAvoy). The X-Men, led by Professor Xavier, Mystique (Jennifer Lawrence), Magneto (Michael Fassbender), and others, unite to stop Apocalypse and his Four Horsemen.
In the final battle, the X-Men face off against Apocalypse and his followers in Cairo. Magneto, who had initially aligned himself with Apocalypse, experiences a change of heart when he realizes the destructive nature of Apocalypse’s plan. Quicksilver (Evan Peters) plays a crucial role in the battle, using his super speed to save many people from the destruction caused by Apocalypse.
The climax involves a series of intense confrontations, with each member of the X-Men showcasing their unique abilities. Jean Grey (Sophie Turner) taps into the Phoenix Force, a powerful cosmic entity within her, to defeat Apocalypse.
The film’s resolution sees the X-Men returning to the rebuilt Xavier’s School for Gifted Youngsters. Jean Grey and Scott Summers (Tye Sheridan) share a moment, hinting at the romantic connection between them. Professor Xavier acknowledges the need for the X-Men to continue their mission, training and protecting mutants and humans alike.
In a post-credits scene, a group of men in suits confiscates a vial labeled “Weapon X,” setting the stage for the introduction of Wolverine (Hugh Jackman) in future films.
In summary, “X-Men: Apocalypse” concludes with the X-Men successfully stopping Apocalypse’s plan, the rebuilding of the Xavier’s School, and the setup for future adventures in the X-Men film series.