The premise for the next Avengers film may have already been revealed in an Easter egg found in Avengers: Endgame.
Previous Marvel films have also been based on specific comic book series, including Captain America: Civil War, and Avengers: Infinity War.
At a Los Angeles screening of Infinity War back in 2018, Endgame directors Joe and Anthony Russo said that they would only return to the Marvel Cinematic Universe if they could direct a film adaptation of Secret Wars.
At least that’s according to a new theory that has emerged ollowing one eagle-eyed Marvel viewer’s social media post.