Required Briefing
Everything you actually need to watch before Avengers: Doomsday hits theaters on December 18, 2026.
Avengers: Doomsday lands in theaters on December 18, 2026. That is the deadline this manual is built around.
The MCU has more than 40 films and shows now. You cannot watch all of them in six months without giving up sleep and a social life. You also do not need to. Doomsday is a direct sequel to a specific set of films and shows, and the rest can wait, or be skipped entirely.
This briefing gives you two lists. The first is required. The second is extra credit.
These are the films and shows Doomsday is actually a sequel to, or that you cannot follow Doomsday without. Watch these in this order and you will walk into the theater in December knowing exactly what is going on.
About 31 hours total. Across six months, that is one film a week with room to breathe.
Steve Rogers's origin. The shield, the serum, Bucky, Peggy. Steve is coming back in Doomsday. You need to know who he was before you meet him again.
The film that started everything. Tony Stark's transformation from arms dealer to hero. Robert Downey Jr. is returning to the MCU not as Tony, but as Doctor Doom. You will feel that more if you remember where it started.
The first time they all come together. Doomsday is built on the idea of an Avengers team, even if the roster has changed. This is the original.
The MCU grows up. A political thriller dressed as a superhero movie. Reshapes SHIELD, redefines Cap, and brings Bucky back as a question instead of an answer.
Carol Danvers's origin, but also Nick Fury's, and the secret history of SHIELD. The 90s setting is doing real work, not just nostalgia. The Skrulls. The cat. The moment Carol realizes who she really is. She has been one of the most powerful figures in the MCU ever since.
The Avengers fracture. Iron Man and Cap take sides. Black Panther and Spider-Man arrive. The setup for everything that breaks in Infinity War.
Thanos wins. Half of everyone is gone. The film that earns every minute of the ten years that came before it.
The payoff. Three hours of resolution for a decade of setup. Tony dies. Cap goes back. The original Avengers era ends here, which is exactly what makes Doomsday's setup so interesting.
The multiverse rules of the road. Where the TVA fits, how variants work, what the Sacred Timeline actually is. Doomsday is a multiverse film. This is your textbook.
Incursions. The idea that universes can collide and destroy each other. The Doomsday teasers literally show Professor X witnessing an incursion. This is required setup.
The first real crossover between the Fox X-Men universe and the MCU. Doomsday is the full collision. This is the appetizer.
The Fantastic Four arrive in the MCU from an alternate reality. Doomsday's final teaser shows them landing near Wakanda. You will want to know who they are before they show up.
Shuri is now the Black Panther. M'Baku rules Wakanda. The Doomsday teasers feature both of them prominently, and the film's events directly set up where Wakanda is when Doomsday begins.
These are the films I personally would never skip. They are not required to follow Doomsday. They are just the ones I love, the ones I think make the universe worth caring about in the first place.
Your list will look different. That is the point. But if you have time after the spine, or if any of these sound like something you would love, do not skip them on my account.
A must-watch on craft alone. Wakanda. T'Challa. Killmonger. Ryan Coogler's direction. The score. The cultural weight of it. This is one of the most important films Marvel has ever made, full stop. Wakanda Forever feeds Doomsday directly, but Black Panther is why Wakanda Forever matters.
The cosmic side of the MCU opens up. Different tone, different rules, different stakes. Star-Lord, Gamora, Drax, Rocket, and Groot. The team that taught me what found family looked like in a comic book movie. The Power Stone shows up here, which matters later.
The Guardians become a family. Yondu's story finishes. Mantis arrives. The opening credits sequence with baby Groot dancing is one of the best opening sequences in any MCU film. The found family theme deepens here.
The trilogy closes. Rocket's backstory is told, and it is brutal. The team transitions. James Gunn lands the plane. This is one of the best send-offs any team in the MCU has gotten.
The film that figured out what to do with Thor. Taika Waititi's color, energy, and humor turned a character who was always a little stiff into someone you actually wanted to follow. The fall of Asgard. The return of Hulk. Cate Blanchett as Hela. The single best soundtrack moment in the entire MCU. I watch this one for fun, which is the highest praise I can give a film in a long franchise.
Peter Parker in a world that already has Iron Man in it. The high school stuff is real high school stuff, not movie high school. The Vulture twist is the best villain reveal in the MCU. Spider-Man was Stan Lee's favorite character. He said so many times. If you are honoring Stan, you watch Spider-Man.
The original. The film that opened the multiverse before the multiverse was the whole point. Visually unlike anything else in the MCU. The astral fight scene alone is worth the watch.
Technically a Doomsday feeder, since Doomsday is a sequel to it. But you can follow Doomsday's Carol-related beats without it. Save it for after if you are time-crunched. Watch it if you fell in love with Carol in Captain Marvel and want more of her.
Spider-Man: Brand New Day (July 2026): Drops between now and Doomsday. If you are seeing it in theaters, watch Homecoming, Far From Home, and No Way Home first. They are not on the required list, but Brand New Day will hit harder if you have followed Peter's arc.
Black Panther: Shadows of Wakanda (2028): Not out yet as of this writing. Ryan Coogler is back. The film picks up after Wakanda Forever. When it lands, it goes here.
Iron Man 2, Iron Man 3, The Incredible Hulk, Thor, Thor: The Dark World, Avengers: Age of Ultron, Ant-Man, Ant-Man and the Wasp, Eternals, Shang-Chi, Quantumania, Brave New World, Thunderbolts*, and most of the Disney+ shows.
Some of these are good films. None of them are required to follow Doomsday. We get into the why in the next section, Non-Essential Intel.
If you watch only the Doomsday Spine: about 31 hours of film and TV across six months. You will walk into the theater in December knowing exactly what is happening and why.
If you add the extra credit: about 55 hours total. You will understand not just what is happening, but why this universe became something worth caring about.
Either way, you spend less time than the full marathon would cost, and you do not miss anything that matters for Doomsday.
I've been watching Tony Stark for seventeen years.
I was there for the original Iron Man in 2008, and I've watched every Tony moment since. I watched him build the suit in a cave. I watched him almost lose himself to it. I watched him become a father in a way nobody on screen had really prepared me for. I watched him snap his fingers, knowing what it would cost him.
The whole arc, from the cave to the cabin to the funeral, is one of the great long stories told in modern film. I don't think Marvel will do another one quite like it. That's why he's on the Spine, even though Doomsday could technically be followed without all of it. Some characters earn their place by being plot-relevant. Tony earned his by being the reason a lot of us showed up in the first place.
Robert Downey Jr. is coming back in Doomsday as Doctor Doom, not Tony, and that's going to be strange. It's going to be a lot of things. But I wanted to say it plainly: it won't be Tony. And that matters more than I expected it to.