A recently circulated plot summary for Avengers: Doomsday mentions that teams from three universes will join forces to confront a new existential threat. The phrase "three universes" has sparked discussion, with some Marvel fans worried that the film's portrayal of the multiverse might not be as expansive as expected.
The summary states that the Avengers, New Avengers, Wakandans, Fantastic Four, and X-Men must set aside their mutual suspicions and unite to prevent disaster. They will face a force more powerful than any single team, and their choices will shape the future of the multiverse.
Some commentators had hoped the film would depict a broader multiversal war, leading them to compare this description to Doctor Strange in the Multiverse of Madness. Since the latter primarily involved two universes, some fans worry that Avengers: Doomsday might also focus on just a few worlds.
However, the number in the summary may simply indicate that the participating heroes come from three different universes, not that the entire film will feature only three. What can be confirmed at present is merely the specific wording of the leaked summary and the ensuing discussion; the notion of a "limited scale" remains fan interpretation rather than an official plot fact released by Marvel Studios.