Avengers: Secret Wars is an upcoming Marvel Cinematic Universe (MCU) film that serves as the conclusion to Phase 6 and the Multiverse Saga. The story is based on two major Marvel Comics events called "Secret Wars," with the MCU likely drawing more from the 2015 storyline. In the original 1984 Secret Wars comic, a cosmic entity called the Beyonder transports various heroes and villains to a planet called Battleworld, forcing them into battles with the promise that their desires will be fulfilled if they win. This event features many iconic characters and significant changes to their stories, such as Spider-Man acquiring his black symbiote costume

. The 2015 Secret Wars storyline, which the MCU is expected to follow more closely, involves the collapse of the Multiverse due to "Incursions," where alternate universes collide and threaten to destroy each other. The Beyonders, multiple cosmic beings, use Molecule Man to cause these Incursions. The Illuminati, a secret group of heroes, try to prevent this destruction but ultimately fail. Doctor Doom then creates a new Battleworld from fragments of different universes and rules as "God Emperor Doom." The story focuses on the survivors trying to restore the original universes and defeat Doom

. The MCU has already introduced elements of the Multiverse and Incursions in films like Doctor Strange in the Multiverse of Madness and Spider-Man: No Way Home, setting the stage for Secret Wars. The movie will feature the heroes trapped on Battleworld, fighting villains and dealing with altered realities. Characters like Deadpool may also play a significant role

. In summary, Avengers: Secret Wars is about heroes and villains from across the Marvel Multiverse being trapped on Battleworld by the Beyonder(s), where they must battle for survival and the fate of their universes amid the collapse of the Multiverse caused by Incursions. The story explores themes of survival, alliance, and the fight to restore or reshape reality itself