Marvel Studios is back at it with team-ups, preparing Avengers Doomsday for next year. It will be the fifth installment in the Avengers film series within the Marvel Cinematic Universe. Fans were treated with exciting news when Robert Downey Jr. was returning to the MCU to play the next big bad, Victor Von Doom/Dr. Doom. He began his MCU journey playing tech genius Tony Stark/Iron Man and ultimately finished his role as the character in a courageous sacrifice in Avengers: Endgame.
Avengers Doomsday Plot Details Surface Online

Alleged new plot details of the film have surfaced online, involving incursions, and the Earth-10005 X-Men Universe. Alex Perez, another insider, had already revealed details of the Incursion plot point. Insider James Mack posted some new information about Avengers: Doomsday. Major and clear warning: the information provided contains potential spoilers for the movie. Mack explains that the incursions play a massive part in Avengers Doomsday.
The cast features upcoming and established stars in the MCU. According to Mack, “Shuri discovers the Incursions after finding anomalies in the fabric of reality. While investigating the multiverse, she discovers that different universes are colliding with one another. Using a hologram similar to the one in the post-credits scene from Shang-Chi, she shares the information with Sam Wilson, Carol Danvers, Bruce Banner, and Wong, warning them of the danger.”
Mack did not reveal who his source was on the Avengers Doomsday plot points. Other claims that were made were that the Fantastic Four arrive on Earth-616 and meet the Thunderbolts/New Avengers. They are looking for their son Franklin, who was kidnapped by Dr.Doom. The family talks about Galactus, and Bucky looks to Sam for some help.
Adding to the stakes, Mack also reveals that, according to his source, “Later in the story, Shuri gathers Sam, Wong, Banner, and Carol in person in Wakanda. In a large meeting room, Thor, Bucky, Yelena, M’Baku, Namor, and the Fantastic Four are also present. Shuri reveals that a specific universe (assumed to be the Earth-10005 X-Men Universe) is dangerously approaching Earth-616. During the conversation and while analyzing the situation, she detects the energy signature of someone from Earth-616 trapped in the approaching universe. Carol deduces it’s Monica Rambeau and becomes even more motivated for the mission.”
The details sound very exciting, and indeed, it appears that these events may be featured in the film. However, we are still some time away from Avengers Doomsday being released. Take note that details can change since the movie is still in production, so take the information with a grain of salt. Then again, even though Marvel has taken great lengths to make sure spoilers don’t leak, alleged crucial plot points have still made their way online. Plus, plot details of Avengers: Infinity War and Avengers: Endgame were leaked online well before they were released in theaters.
Final Thoughts
Some other details included in the post are that Wong calls America Chavez to help open a portal to the parallel universe, the Avengers led by Sam, parts of the Thunderbolts/The New Avengers, the Fantastic Four, Namor, M’Baku, and Shuri staying on Earth leading to an seeming Avengers vs. X-Men battle. The film is directed by the Russo brothers, with the screenplay by longtime collaborator Stephen McFeely. Additionally, Newton Thomas Sigel will serve as the film’s cinematographer. For this year, Fantastic Four: First Steps will hit theaters on July 25. Avengers Doomsday will be released in theaters on December 18, 2026.