Note: This post contains potential spoilers for Avengers: Doomsday.
Marvel’s Avengers: Doomsday will have an Avengers: Infinity War-level cliffhanger, with Robert Downey Jr.‘s Doctor Doom succeeding in his plan: “The worlds finally collide. The universes are destroyed. Nothing remains. Only Doom.“
According to new leaked details for the Avengers: Doomsday post-credits, there will be two post-credits scenes. The first one shows a new world set in the year 1600. People and children walk and talk in a peaceful environment. In the background, a green-cloaked figure stands out against the horizon — Doctor Doom. The shot reveals that Doom has recreated a new world. It also features Franklin Richards, Sue Storm, and a small blonde girl.

The second post-credits scene follows eight years after the events of Avengers: Doomsday. A group of explorers finds the Raft, lost in the depths of the ocean. It remains intact, covered by the passage of time… and its systems slowly begin to reactivate, revealing that the survivors are still inside.
The surviving heroes travel by ship to the Raft, a structure built using the combined technologies of Reed Richards and Hank Pym.
Among the survivors are Reed Richards, Shuri, Star-Lord, Captain Marvel, Vision, Wong, the Young Avengers, Cyclops, Storm, Iceman, Sam Wilson, Beast, Spider-Man (Tom Holland), Yelena, Bucky, Ghost, and U.S. Agent.
Directed by the Russo brothers from a screenplay by their longtime collaborator Stephen McFeely and Michael Waldron. The film features cinematography by Newton Thomas Sigel (Bohemian Rhapsody, X-Men: Days of Future Past) and production design by Kasra Farahani.
Here’s the plot synopsis for Avengers: Doomsday, revealed by Disney China:
“Doctor Doom has officially arrived on the Marvel Cinematic Universe stage. This villain, a master of cutting-edge science and powerful magic, will unleash a cascading crisis across the multiverse. Marvel’s most iconic actor, Robert Downey Jr., also returns as Doctor Doom!”
As of now, the announced cast members of Avengers: Doomsday are: Downey Jr. as Doctor Doom, Paul Rudd as Ant-Man, Simu Liu as Shang-Chi, Tom Hiddleston as Loki, Florence Pugh as Yelena Belova, Danny Ramirez as Falcon, Sebastian Stan as Bucky Barnes, Winston Duke as M’Baku, Hemsworth as Thor, Letitia Wright as Black Panther, Tenoch Huerta Mejía as Namor, Anthony Mackie as Captain America, David Harbour as Red Guardian, Wyatt Russell as U.S. Agent, and Hannah John-Kamen as Ghost. Ian McKellen as Magneto, Patrick Stewart as Professor X, Rebecca Romijn as Mystique, James Marsden as Cyclops, Kelsey Grammer as Beast, Alan Cumming as Nightcrawler, and Channing Tatum as Gambit. Pascal as Reed Richards (Mr. Fantastic), Vanessa Kirby as Sue Storm (Invisible Woman), Joseph Quinn as Johnny Storm (Human Torch), Ebon Moss-Bachrach as Ben Grimm (The Thing), and Lewis Pullman as Sentry.
Produced by Kevin Feige, Louis D’Esposito, and Russo Brothers will produce through their AGBO banner.
Avengers: Doomsday will be released in theaters and IMAX across the United States on December 18, 2026, and Avengers: Secret Wars is scheduled for release on December 17, 2027.