Doctor Strange in the Multiverse of MadnessSave

Cold open. The void between universes. A version of Doctor Strange — bearded, in tactical battle robes, calling himself Defender Strange — is sprinting across an impossible crystalline platform of floating rocks suspended in a kaleidoscopic dimensional void. With him is a teenage Latina girl in a denim jacket and red star earrings, America Chavez (Xochitl Gomez), age fourteen. They're being pursued by a giant, multi-tentacled cosmic demon firing harpoons of pure entropy. Defender Strange and America are running for a glowing book floating in the distance — the Book of Vishanti, a Sanctum Sanctorum text said to contain the cosmic-magic spells needed to defeat any multiverse threat. The demon catches up to them. Defender Strange — fearing the demon will absorb America's interdimensional-travel abilities — pulls his power-dagger and prepares to stab America in the throat to absorb her powers himself. America fires a star-shaped dimensional portal under her own feet. She and Strange fall through. The portal closes. The demon absorbs Defender Strange's body. America lands in midtown Manhattan, alone.

Earth-616. New York City. Stephen Strange (Benedict Cumberbatch) is at the formal wedding of Christine Palmer (Rachel McAdams), his old hospital colleague and the love of his life from Doctor Strange (2016). Christine is marrying a respected oncologist. Strange, in his dress uniform with the Cloak of Levitation folded into his jacket pocket, stands at the back of the church watching. He gives a small toast at the reception. He's stoic about it. Christine pulls him aside and asks why they were always doomed. He has no good answer. They part as friends. Then he hears a Doppler-shift scream from outside the church and bursts out onto Sixth Avenue to find America Chavez running through traffic being chased by a fifty-foot cosmic Cyclops demon.

America Chavez. Strange and Wong (Benedict Wong, now Sorcerer Supreme since the events of WandaVision) intercept the demon together. They defeat it. They take America to the Sanctum Sanctorum. America explains: she has a unique innate ability to open dimensional portals between universes by raising her fists. She's the only being in the multiverse with this power. Other multiverse forces — including the demon that just chased her — have been hunting her across realities for years to absorb her power. She's been on the run her entire life since she accidentally opened a portal as a small child that swallowed her mothers into the multiverse. Strange examines the demon's body. It has occult runes carved into its hide that are not from any normal demonic origin — they're from the Darkhold, the cosmically-corrupt book of black magic associated with Mount Wundagore and the Scarlet Witch.

Wanda. Strange travels to a remote cabin in the Catskill Mountains to consult with Wanda Maximoff (Elizabeth Olsen, fully transformed since the Disney+ WandaVision (2021) series). Wanda has been living quietly since the events of WandaVision, raising apples and reading. She greets Strange warmly. He asks for her help dealing with the demonic attacks. Wanda agrees. They walk in her orchard. Then Strange realizes something is wrong. Wanda has been wearing the Scarlet Witch tiara from WandaVision's finale. She has been studying the Darkhold for nine months. She has been using its black magic to communicate with versions of her dead children — Billy and Tommy, the twin sons she conjured during the WandaVision hex — across the multiverse. The dead children Wanda created don't exist on Earth-616 anymore because the WandaVision hex was undone. But they DO exist in millions of parallel realities. Wanda needs to find an Earth where they are still alive. She needs America Chavez's powers to physically travel there. She's the one orchestrating the demon attacks on America. Strange refuses to help her. Wanda turns to him. "Bring me the girl, Stephen." Her eyes go red.

Wanda attacks Kamar-Taj. Wanda's full Scarlet Witch form descends on the Kamar-Taj monastery in the Himalayas — the sorcery school where America is being protected by Wong and the masters of the Mystic Arts. Wanda kills sorcerers in the courtyard, the dining hall, the library, and the gardens with a continuous wave of cosmic-energy slaughter. The Mount Wundagore-corrupted Darkhold magic has amplified her cosmic powers a hundredfold beyond what she demonstrated in Endgame (2019)'s final battle. She kills dozens of sorcerers in single energy bursts. The film is rated PG-13 but the Kamar-Taj massacre scene is genuinely terrifying — heads explode, bodies are crushed under collapsing stone, the camera lingers on the corpses. Strange, in defense of America, opens a dimensional portal to escape with her at the last second. The portal closes behind them. Wanda is left in the smoking ruins of Kamar-Taj. Wong, alive but captured, is dragged off to Mount Wundagore for interrogation.

Earth-838. Strange and America's portal opens onto an alternate reality — Earth-838 — that is visually similar to Earth-616 but subtly different (red taxi cabs instead of yellow, the cardinal direction lights are reversed, a NYC subway station has different signage). They're captured almost immediately by the Earth-838 Sanctum's security forces — Mordo (Chiwetel Ejiofor reprising his Doctor Strange villain) is the local Sorcerer Supreme here, having taken the role after the Strange-838 was killed. Mordo brings Strange and America to the Illuminati — a secret society on Earth-838 that polices superhero threats. The Illuminati include: Professor Charles Xavier (Patrick Stewart) of the X-Men, Captain Peggy Carter (Hayley Atwell) the World War II super-soldier, Black Bolt (Anson Mount, reprising his Inhumans role), Captain Marvel Maria Rambeau (Lashana Lynch reprising her Captain Marvel-adjacent role), and Mister Fantastic Reed Richards (John Krasinski, in his first MCU appearance). Mordo is the sixth member. The Illuminati introduce themselves to Strange-616 and explain that they have been monitoring the multiverse for incursions. The recently-deceased Earth-838 Strange was the one who caused a multiversal incursion that destroyed Earth-838's parallel reality. Earth-616 Strange is now being judged for being a potential cause of an incursion.

Wanda dreamwalks. Then Wanda Maximoff's consciousness arrives at the Illuminati's chamber. Wanda — using the Darkhold's black magic — has dreamwalked into the body of her Earth-838 counterpart (an Earth-838 Wanda who is alive and well, with her two real twins on Earth-838). The Earth-838 Wanda becomes possessed by Earth-616 Wanda's enraged consciousness. She emerges into the Illuminati chamber as a fully-empowered Scarlet Witch with the dreamwalking-amplified strength of the Darkhold's curse. The Illuminati are five superheroes. Wanda kills them all in the most-violent action sequence in mid-2010s MCU history. She crushes Black Bolt's mouth shut with a hand-gesture, causing his sonic-vocal power to backfire and explode his own head. She compresses Mister Fantastic's stretching body into a noodle and then snaps him. She drains Captain Carter's Captain America shield through her body and impales her with it. She crushes Captain Marvel under a falling statue. Then she comes for Professor X. He's the last one. He tries to read her mind and undo the dreamwalk. Wanda snaps his neck telepathically. Five Illuminati members die in two minutes.

Strange-616 escapes with America through a portal Mordo had created. They emerge in a multiverse-void of broken realities — the Book of Vishanti is in this dimension. They sprint to the Book just as Defender Strange's corpse-demon catches up to them. America fires a portal that escapes the demon. The Book of Vishanti is destroyed by Wanda's interfering magic before Strange can read it. Strange is now without the spells he needed to defeat Wanda. He's now on a sinking reality fragment in the multiverse void with a giant demon and a teenage girl.

Strange-Sinister. Strange takes America to a different Earth — Earth-1, a destroyed reality — and finds the corpse of a darker, evil version of himself. This Sinister Strange-1 had killed his entire reality's other heroes after going corrupted by the Darkhold. Strange-616 reads the Darkhold himself (against his own better judgment) to use the Darkhold's hidden technique of "dreamwalking" — possessing a corpse to walk it as a vehicle. Strange-616 dreamwalks into the dead body of Sinister Strange. The Cloak of Levitation refuses to recognize the corpse-body as Strange and tries to leave him. He convinces it to stay. With his consciousness in the dead Strange-1 body, Strange dreamwalks back to Mount Wundagore.

Mount Wundagore. The Mount Wundagore stronghold in Eastern Europe — where the original Darkhold was forged, and where Wanda has been using the Throne of Cthon to fuel her dreamwalking — is the film's final-act setting. Wanda is at the center of the throne, using America's powers (extracted from a captured America Chavez) to dreamwalk between dozens of realities looking for one where Billy and Tommy survived. Wong is chained to the floor. Strange-616, in his dead-Strange-1 corpse body, arrives at the throne and fights Wanda. The fight is the most-grotesque sorcerer duel in the MCU — Strange controls thousands of damned souls inside the corpse he's wearing, which Wanda counter-controls with Darkhold runes burned into their skin. The Cloak of Levitation finally abandons Strange's dead body because the corpse is too corrupted. Strange shifts back to his own body via a final dimensional jump.

America's awakening. Strange tells America to trust her powers. She doesn't need extraction. She can portal between universes at will if she stops being afraid of her own abilities. America activates her dimensional powers consciously for the first time. She opens a portal directly to Wanda's universe-of-the-living-twins, where the Earth-838 Wanda's actual surviving family lives. Strange dreamwalks the original Earth-616 Wanda's consciousness across the portal and into the living Earth-838 Wanda's body, where she encounters her real Earth-838 versions of Billy and Tommy — six-year-old twin boys who scream and run from the unfamiliar woman trying to hug them. Wanda, broken, sees her children fear her. She realizes she has been a monster across realities. She withdraws her consciousness from Earth-838 and returns to her own body at Mount Wundagore.

Wanda's redemption-by-death. Wanda, fully aware of the harm she has caused, uses her Scarlet Witch energy to bring down the entire Mount Wundagore stronghold around her — destroying the Throne of Cthon, all known copies of the Darkhold, and herself in a single act of cosmic self-sacrifice. The mountain collapses on her. She is buried under millions of tons of stone. The credits cut to Wanda's silhouette in the rubble. She's dead — or at least, the Earth-616 Wanda is gone from her physical body. The Scarlet Witch enchantment has been broken.

The third eye. Strange returns to Earth-616 with America and Wong (also freed). America Chavez is now publicly an MCU character. She enrolls at Kamar-Taj as a junior sorcerer-in-training. Strange returns to his New York Sanctum Sanctorum. He goes to bed exhausted. He wakes up the next morning. He gets out of bed. He looks at himself in the bathroom mirror. A third eye opens on his forehead — a small purple-glowing pupil identical to the ones the corrupted Strange-1 had developed from prolonged Darkhold use. The Darkhold corruption from his single use has permanently altered him. Strange is becoming his Sinister-version self. Cut to credits.

Mid-credits. Strange is walking down a Manhattan street weeks later when a glowing-pink woman steps out of a dimensional rip in midair in front of him. Charlize Theron, in tactical purple robes — Clea, in the comics the daughter of Dormammu and Strange's lover from the Dark Dimension lore. "Dr. Strange. You've caused an incursion." She slices open a dimensional gateway behind her, showing him a fragment of a Dark Dimension. "We need to fix it. Are you in?" Strange grins. He summons his Cloak. "Sure. Why not." He follows her through the portal. Cut to credits. The Dark Dimension arc — a major Marvel comics property — is officially being set up for a third Doctor Strange film that has not yet been formally announced as of late 2026.

Post-credits. Bruce Campbell — Sam Raimi's longtime collaborator from the Evil Dead films and Spider-Man trilogy — appears as a Pizza Poppa street vendor in midtown Manhattan. His hand has been hexed by Strange earlier in the film to slap him repeatedly for over twenty-four hours straight. The post-credits scene shows Bruce Campbell's character finally able to stop slapping himself. He turns to the camera and announces in a fourth-wall-breaking moment: "It's over!" Cut to credits.