Marvel’s Avengers: Doomsday Updated Plot Details Leaked Online

Warning: This article contains spoilers for Marvel’s Avengers: Doomsday.

Marvel’s Avengers: Doomsday has reportedly received a new plot leak, which is an updated version of the previous one. This leaked plot contains many surprise characters appearing in the movie, including Scarlet Witch, Doctor Strange, Star-Lord, She-Hulk, Captain Marvel, the Guardians of the Galaxy, and more.

According to scooper James Mack, the updated version of the Doomsday plot reportedly covers 80% of the script, and the final battle will take place in Latveria. However, the leak states, “The Final Incursion takes place between Earth-616 and Earth-828.”

It is reported that Doctor Doom once had a wife, Valeria, and a son. According to the leak, an anomaly connected to Steve’s arrival on Earth-828 caused an experiment to fail, which resulted in the deaths of Doom’s family. Doom becomes obsessed with rebuilding the Multiverse to bring his family back.

Here are the exclusive details of the official plot.

It all begins on Earth-10005. We see Professor X and Magneto playing chess while devising a plan to attack another Earth. They have a bomb created by Beast. Suddenly, another Earth appears on the horizon: Earth-96238, and the X-Men, who have faced similar situations before, spring into action.

Arriving on Earth-96238, where it is raining, a group of Sentinels, along with Magneto, travel to New York City while transporting a destructive bomb. Meanwhile, Deadpool and Wolverine discover Spider-Man’s (Tobey Maguire) presence, and a fight ensues. Most of the battle takes place on a rooftop; Spider-Man defeats them, but in the end, it is too late: Magneto and the Guardians have already destroyed New York and New Jersey.

Spider-Man remains on his knees, contemplating the destruction. Wolverine tries to explain why this is happening, but Magneto finds them and steals the device to activate the bomb. Spider-Man tries to attack Magneto but is defeated. Wolverine tries to save him, but it’s too late to escape.

From Charles Xavier’s window, Raimi’s Earth explodes, and Magneto and Deadpool return through the portal, leaving Wolverine behind.

The action then shifts to Tony Stark’s funeral. Steve speaks with some of the heroes, including Ant-Man, before embarking on a journey to retrieve the Infinity Stones. Traveling through time, he decides to stay with Peggy, and they have a son named Jim. One day, Loki visits them.

Upon seeing him, Steve immediately suspects something is wrong and thinks Loki is going to attack them. However, Loki calms him down and explains that this isn’t the same Loki he fought in the past, but a different, godlike version who now controls the timelines of the Multiverse. He warns Steve about the TVA and explains that their presence in this era is causing an incursion and that this timeline will soon be destroyed because Steve should never have stayed there or had a child.

To save them and prevent the collapse, Loki offers them a way out: transporting them to another place where they won’t cause an incursion—a universe where they don’t exist and can live in peace: the Fantastic Four’s universe. Before leaving, Loki gives Steve a special card so he can contact him. Steve and his family accept the offer and have been living in this new universe for ten years.

The sequence continues with a scene showing events from ten years earlier.

Reed Richards, Johnny Storm, and the Thing are at a baseball game. There’s an accident involving the stadium fence, and Steve and Jim help people move and dismantle it. Ben notices something unusual, and when he goes to investigate, they receive a burglary alert from the Baxter Building and panic, racing home in the Fantasticar. Upon arriving, they’re surprised to find everything calm. There, they see Doctor Doom with Sue Storm, H.E.R.B.I.E., and Franklin. Although Reed is surprised by their sudden encounter, he knows Victor well. Reed, Ben, and Victor studied together at university. Sue knows Victor because he rules Latveria, a country not part of the Life Foundation. However, the connection runs deeper: it’s well known that Victor lost his wife and son. Victor only became the ruler of Latveria later, when he overthrew the brutal regime with his Doombots. Victor is, so to speak, Earth’s Doctor Strange—a master of magic and sorcery. Because of this, in addition to the rumors about witches and witchcraft, Sue is nervous.

Victor warns Reed that he fears their Earth will be the next victim of an incursion. Victor is very familiar with incursions and explains to the Fantastic Four that when the fabric between two realities is torn, the centers of each are drawn toward one another, and once the incursion is complete, both universes cease to exist. The center, of course, is Earth. Reed and Victor investigate and discover three anomalies on their Earth, all in the same location. We see that Steve and his family have grown up together on this Earth. Steve has a beard and long hair, and James is now about 10 or 11 years old. Victor and Reed encounter these anomalies but are surprised to discover that they are simply a happy family. Steve confesses and explains how he ended up there. They then warn Steve about what is happening in the Multiverse.

Inspired by the Fantastic Four and their exploits in the forest, Thor and his adopted daughter, Love, travel through space together. However, Love is now plagued by nightmares about the incursions. Thor travels to New Asgard, where Valkyrie and an Asgardian doctor are examining a young girl who is dying due to the collapse of the Multiverse. Valkyrie receives a call from the Avengers informing her of the ship’s arrival on Earth. Thor leaves Love in New Asgard and heads to the Fantastic Four’s ship. Sam Wilson’s Avengers are also notified.

Thor boards the Excelsior and is shocked to see Steve. Thor doesn’t even believe it’s him until Steve picks up Mjolnir. Thor and Steve embrace, and the Excelsior is forced to dock at the new Avengers Tower. As soon as they board, Sam’s team arrives and immediately argues with Bucky about which team should take command. Scott Lang spends some time with Ghost. Steve gets off the Excelsior, and almost everyone is surprised to see him. Steve has a pleasant reunion with Sam, Scott, and Bucky. He also shares a touching moment with Yelena Belova as they discuss Natasha. Steve Rogers brings the two groups of Avengers together with a Captain America-style speech, focusing not only on the incursions but also on the cosmic crisis. Sam and Steve make plans to travel to Wakanda, while Shuri tells Sam that she, too, is aware of the space crisis and is already working on a solution.

The group of heroes reunites with the people of Wakanda, and Steve is shocked to learn of T’Challa’s death. A small group heads to Talokan, where the effects of the space crisis are visible. The sky has turned red, and because of this, Namor has used all the water that normally filled Talokan to create a massive water barrier around it. Shuri and M’Baku then travel to Talokan along with Sue, Ben, Bucky, Ghost, Falcon, and U.S. Agent. The rest remain in Wakanda searching for a solution.

Sue uses her powers to cross the barrier and, upon reaching Namor, discovers that he is extremely hostile. He refuses to cooperate with Shuri, and this is where we see Sue’s diplomatic skills in action. She manages to unite the people of Wakanda and the Talokans. They return to Wakanda with Namor, and when they arrive, they discover that the situation is hopeless. No solution has ever been found; Reed even begins to believe that the Multiverse’s fate always leads to death, but he remains open to other options.

However, Doom suggests attacking the X-Men’s Earth, which is causing an incursion between Earth-828 and Earth-616. Sam suggests a diplomatic approach, while Namor believes bloodshed is the way forward. Scott dismisses the Quantum Dimension and mentions his encounter with Kang. Doom looks at Scott in response to this comment. Steve rejects the Infinity Stones, swearing they are the reason for their current predicament. Reed jokes that Galactus would be useful in this situation, but no one knows where he is. This joke gives Reed an idea: what if they use the same technology they used to exile Galactus?

Reed believes that if they build three cannons, one on each Earth, they will help separate the universes. However, they must hurry because time is running out. Steve splits everyone into three teams, with one team remaining in Wakanda to begin constructing their cannon. Wakanda already possesses advanced technology that could easily replicate what the Fantastic Four did in First Steps. Another team travels to Earth-828, specifically to the Baxter Building, to construct their cannon. The final team must travel to Earth-10005 and convince the heroes there to listen to the plan. This is considered the most important task, so the most prominent heroes participate. Victor, Reed with H.E.R.B.I.E., Sam, Yelena, and Shang-Chi are the ones who go.

Steve feels uneasy around Doom and tells Thor and Loki about it. Thor insists that Steve take him to Loki, so they devise a plan to reach the TVA using the map Loki left him. Sue and Shuri also have their own concerns, and Sue admits to Shuri that something is wrong with Victor, so they explore other options on their own.

The team remaining on Earth-616 consists of Shuri, Sue with Franklin, Namor, Steve, Thor, Ant-Man, and Red Guardian. The team going to Earth-828 consists of Johnny, the Thing, Falcon, U.S. Agent, Ghost, and Bucky.

After traveling on the Excelsior, Reed, accompanied by H.E.R.B.I.E., Sam Wilson, Yelena Belova, Shang-Chi, and Doctor Doom board a Quinjet bound for Earth-10005.

Upon landing at the X-Men Mansion, they are immediately captured by a group of Guardians guarding the building. Doom remains outside for cover while the rest of the team stealthily enters. The X-Men have survived many incursions before and have become extremely hostile: they trust no one and believe the heroes of Earth-616 and the Fantastic Four have come to destroy them, so they attack without hesitation.

As they nervously wander the halls, Nightcrawler stalks them from the shadows. Upon reaching the Danger Room, they encounter Mystique. Yelena ignores Reed’s direct orders and goes on the offensive. In the battle, Mystique changes her appearance, first becoming Yelena herself and then Natasha, which greatly annoys Yelena, though she eventually manages to regain the upper hand. Meanwhile, Shang-Chi fights Gambit in a flawless and evenly matched battle that ends in a draw. Reed tries to contain Deadpool in a chaotic fight that culminates in a comedic, Deadpool 2-esque moment when Wade sits on Reed’s swollen face. At the same time, Cyclops attacks Sam Wilson and fires an optic blast so destructive that it appears to kill him.

The entire battle is suddenly interrupted when Beast, the figure shown in the trailer descending the stairs, appears. Realizing they pose no direct threat, Beast leads them to the medical bay, where they find Monica Rambeau. Monica is trapped on Earth-10005 following recent events and is gravely ill from being in the wrong reality.

Beast explains to Reed that Monica’s presence in this universe is accelerating the incursion involving her Earth to a critical level. He also reveals that…

Finally, Reed and Doom manage to meet with Charles Xavier and Magneto. As the frustrated X-Men watch, Reed and Doom present their true solution to prevent the Multiverse’s collapse: constructing massive cannons on each remaining Earth that will fire a force capable of permanently separating the universes and preventing incursions once and for all. After an explanation, Reed manages to convince Xavier and Magneto to join the plan and abandon the use of the destructive bomb.

Upon returning to Earth-616, Steve and Thor leave their group and head to the TVA. However, they find it destroyed and littered with the corpses of its agents. Mobius is there and helps Steve and Thor find Loki. They arrive at the End of Time and see him dead at the foot of the throne. His heart has been ripped from his body.

The Watcher appears and tells Steve and Thor what happened: Doom and a group of followers were responsible. He then takes Steve and Thor to Earth-10005 because everyone there is in danger.

Steve and Thor return to Earth-10005, and the trailer shows Thor’s arrival and the ensuing battle. Reed is completely stunned and refuses to believe Victor could have done such a thing. He yells in Victor’s face. But, sadly, it’s true.

Victor unleashes half a dozen Guardians against the Avengers and the X-Men. The teams join forces to fight them. However, Deadpool leaves, promising to find proper reinforcements, and disappears from the battlefield. Doom fights all the Avengers and easily defeats them. The mutants are also defeated. Magneto fights Doom, putting up a decent fight, but ends up severely wounded in the arm.

Unfortunately, Mystique, who saves Magneto’s life, and Nightcrawler, who saves everyone from the Guardians’ attack and teleports them to safety, are killed by Doom. In the ensuing fight, the mutant Avengers are insufficient to defeat the Guardians, and the Brotherhood arrives to help. The Scarlet Witch of this universe, along with Polaris, Quicksilver, and other mutants, easily destroys all the Guardians.

Doom finds what the Scarlet Witch of this universe was looking for. Steve realizes this and tries to save Wanda, but Doom’s attack stuns him, and Wanda is kidnapped. Victor uses the Ultimate Annihilator to destroy the X-Men’s world. The Avengers, the mutants, Reed, and H.E.R.B.I.E. escape by boarding the ship and traveling to Earth-828. The reality of Earth-10005 is destroyed.

The remaining Avengers, Reed Richards, and Sue Storm tell everyone about Victor von Doom’s past. Bucky has a personal mission to save Steve; he now has a family and must save Peggy and James. However, she is not the original Peggy—she is a witch, and the original Peggy is dead. She tells Doom that they are in the Baxter Building, and he orders an attack. The witch reveals her identity and kidnaps James.

The attack on New York begins, and the Baxter Building is shown about to explode with everyone inside, including Franklin and Johnny. Franklin saves everyone. Charles admires Franklin as an Omega-level mutant.

Thor travels to Earth-616, prays to Father Odin, and a new squad arrives. It includes Jane Foster, Heimdall, and the Loki from Infinity War. The people of Wakanda and M’Baku also arrive with Thor. Valkyrie and Korg are also there.

Only two Earths remain in the entire Multiverse. A portal appears in the sky, connecting Earth-616 and Earth-828. The final attack begins, a showdown between Earth-616 and Earth-828. The Fantastic Four, the Avengers, and the X-Men arrive in Latveria from the Baxter Building, while Thor and his army, along with the people of Wakanda, arrive from Earth-616.

Victor returns Steve to his castle in Latveria. Steve gets up and sees Peggy, following her to the altar, where a fateful chair with a symbol at its center, imbued with green magic, sits. Followers begin to arrive, surrounding Steve Rogers. The Green Witch is revealed to be Death. Doom arrives with James, who is crying.

As Doom’s followers restrain Steve, Doom begins to speak to him, explaining that his interference was the reason for his downfall. Victor tells Steve that he was much like him—a family man. Victor studied the Multiverse long before it began to collapse. He met his wife, Valeria, and they had a son. Then, one day, ten years ago, during a routine experiment, an anomaly occurred when Loki transported Steve to Earth-828, causing the experiment to fail. This resulted in the deaths of his wife and son and left him horribly disfigured.

He grabs James and stabs him, killing him instantly. Three witches are present with Boris. The three witches are Death, represented by green; the Ancient One, represented by orange; and Clea, represented by purple. Boris wears a three-eyed helmet with armor. Doom personally ripped Loki’s heart from his chest. Now, Loki’s heart is on display, along with some books.

Victor corrupted Strange and Clea when they traveled to the Dark Dimension, making them believe that only he could save the Multiverse. Victor sits on his throne, preparing his team and the Doombots to fight the invaders. He orders Strange to begin casting a spell from the Book, using both Loki’s heart and Wanda Maximoff’s magic. Doom’s followers are the leaders of each destroyed universe.

Victor’s main objective here is simple: to allow the final incursion to occur and rebuild the Multiverse to resurrect his lost family.

On Earth-616, Sentry begins to sense that something is amiss between Earth and the approaching world. He unexpectedly encounters Vision with Tommy and Billy at Avengers Tower. Vision activates Tony Stark’s protocol for all the world’s heroes and realizes that preventing the incursion is impossible.

Meanwhile, on Earth-828, the heroes arrive in Latveria from the Baxter Building, while Thor and his new Valhallan army arrive from Earth-616. Doctor Doom and his team have prepared for the attack. Doom’s followers and hundreds of Doombots are present. Deadpool returns after abandoning the heroes on Earth-10005. He arrives with a multiversal team: Blade, Elektra, and Phantom Rider.

A Multiversal war erupts in Latveria, pitting the people of Wakanda, Thor’s army, the Avengers, and the Fantastic Four against the Doombots and their variants. Namor and Shuri work together; Namor triggers a tsunami that destroys many Doombots. Shuri manages to infiltrate Doom’s castle with Bucky to rescue Steve Rogers.

Doctor Strange is the only member of Doom’s team not involved in the battle, as he is busy working on a spell involving Wanda, Loki’s heart, and the Book of God.

Two of Doom’s followers are watching Steve Rogers when they are intercepted by the Avengers, Shuri, and Bucky, who rescue him.

The action then shifts to Earth-616, where it becomes clear that something is happening: the sky turns red, and hordes of Doombots and villains begin attacking New York City.

They pass through a portal, or wormhole, and a scene similar to the one in The Avengers (2012) unfolds.

The new Avengers team defends Avengers Tower: Sentry, Spider-Man, Jean Grey, Punisher and the Defenders, Wong, America Chavez, Cassie, Kate, Kamala, Star-Lord, Vision, She-Hulk, Hulk, and Captain Marvel, who arrives with the Guardians of the Galaxy, along with many others, including villains. They all hear Vision’s call.

The attack on Earth-616 begins. Vision states that the approaching Earth is about to launch a direct attack. Sentry decides to perform a heroic act by flying into space to stop the attack with his bare hands. He buys time for the others to escape.

The war in New York wreaks havoc throughout the city. Everyone fights Doombots and costumed followers of Doom. Spider-Man and the other heroes deliver excellent action sequences.

On Earth-828, Sue, Franklin, and Charles are aboard Reed’s ship, the Ark, which is prepared to withstand changes in a hostile environment and survive the collapse of the Multiverse. Sue stays behind because she is pregnant. Charles acts as a mental link with all the mutant Avengers so they can communicate with one another and informs them that Bob is slowing down Earth so they can escape. There, Yelena speaks with Bob, and he says goodbye to her and her friends.

One of the witches intercepts this message and teleports to the ship, killing Charles Xavier and kidnapping Sue and Franklin.

Cyclops, Reed, Sam, and Magneto realize what is happening and go to the ship to protect them, but they arrive too late. The Avengers—Johnny, Ben, Thor, Loki, Lady Thor, and the Avengers of the Multiverse—are at Doom’s castle and emerge victorious in the war against the Doombots and his followers.

Doom fights them all, defeating them one by one.

Steve tries to strike Doom with Mjolnir, but it shatters, and Doom counterattacks with his sword. Bucky sacrifices himself to save Steve, dying and bidding him farewell.

Three witches kill Ghost Rider. One of Doom’s followers fights Yelena and Shuri. Shuri manages to defeat her but dies from her wounds.

Thor looks to the sky, closes his eyes, and receives Odin’s call. His new armor and powers—yellow armor with yellow thunder—allow him to rival Doom in battle. Thor takes the initiative in the fight. However, at a certain point, Thor begins to lose his power as Doom drains and absorbs it. Doom defeats Thor by cutting off his hand with his sword and defeats all the Avengers.

Reed’s ship automatically activates and leaves Earth-828. Reed, calling out for Sue and Franklin, is unable to save them.

Sentry crashes, and the worlds begin to collide.

The heroes simply run out of time, and Strange completes the spell just in time. With this, Victor is finally able to alter the Multiverse. Thus, reality ceases to exist.

Two Earths collide. The screen fades to black, and Doom appears in white armor, seated in a chair next to Doctor Strange. THE END.

As we can see, the post-credits scene of the Spider-Man movie echoes the ending of the Avengers: Doomsday movie.

Here’s the official new plot synopsis for Avengers: Doomsday:

“Universes collide, and the Multiverse Saga begins its final chapter in Marvel Studios’ Avengers: Doomsday. Beloved heroes from three distinct universes will be set on a deadly collision course and ultimately face an existential threat unlike anything they’ve ever encountered. This epic film will lay the foundation for the future of the Marvel Cinematic Universe. Robert Downey Jr., who led the Avengers series as Iron Man, makes a shocking return as the evil scientist Doctor Doom. Familiar heroes like Steve Rogers and Thor are joined by a new generation of heroes, hinting at the largest assembly in history.”

Avengers: Doomsday is produced by Kevin Feige, Louis D’Esposito, and Jonathan Schwartz.

The film stars Robert Downey Jr., Chris Evans, Chris Hemsworth, Pedro Pascal, Paul Rudd, Anthony Mackie, Florence Pugh, Vanessa Kirby, Ebon Moss-Bachrach, Wyatt Russell, Channing Tatum, Simu Liu, Ian McKellen, Tom Hiddleston, James Marsden, Patrick Stewart, Joseph Quinn, Sebastian Stan, David Harbour, Letitia Wright, Lewis Pullman, Kelsey Grammer, Kathryn Newton, Danny Ramirez, Winston Duke, Alan Cumming, Hannah John-Kamen, Rebecca Romijn, Mabel Cadena, and Tenoch Huerta Mejía.

Avengers: Doomsday will be released in theaters across the United States on December 18, 2026, and Avengers: Secret Wars is scheduled for release on December 17, 2027.