Spider-Man: Across the Spider-Verse Ending Explained: Why Miles Morales Is Stranded on Earth-42

Spider-Man: Across the Spider-Verse ended with a real gut punch of a cliffhanger, the kind that leaves you asking what happens now. There was no post-credit scene, so here is where the movie actually leaves us and what it sets up going forward.

Miguel O'Hara Brands Miles Morales an Anomaly Because of a Stolen Spider

Miles learns that Miguel O'Hara's Spider Society has excluded him because he is an anomaly. His spider, Alchemax spider number 42, came from another universe, Earth-42, and was never supposed to bite him in the first place. According to Miguel, that collider event caused the Peter Parker of Miles's own universe to die, left Earth-42 without a Spider-Man of its own, and created the multiverse-consuming villain the Spot in Miles's universe.

That villain, Jonathan Ohnn, is revealed in this film to be the same Alchemax scientist from the 2018 movie, the one Miles famously threw a bagel at, producing that great sound effect word "bagel."

Miguel Explains the Web of Life and Destiny and Its Canon Events

Miguel lays out the nature of what he calls the web of life and destiny, or the Arachno-Humanoid Poly-Multiverse, a name I joked "you always lose me with that." This web is made up of interlocking nodes of canon events, critical rites of passage every spider person is supposed to go through, including the deaths of loved ones and the sacrificial deaths of police captains. For Gwen Stacy that is her father George Stacy, and for Miles that is his father, Jeff Davis, soon to be Captain Jeff Morales.

Miles, simply by existing as an anomaly, disrupts these canon events. We saw that in Mumbattan, when Miles saves Pavitr Prabhakar's girlfriend's father, Captain Singh, from the fallout of the crumbling Alchemax building in that universe, a rescue that was never supposed to happen.

Miles Escapes the Spider Society During a Chase Through Nueva York

Miguel and his society trap villainous anomalies from across the multiverse in amber colored shells, including a live action cameo appearance by Donald Glover as an alternate universe Aaron Davis Prowler. Glover played Aaron Davis back in 2017's Spider-Man: Homecoming, though he was not yet Prowler at that point, and he also cameoed in 2018's Into the Spider-Verse on Aaron Davis's television playing his Community character Troy, seen wearing Spider-Man pajamas. Glover, also known as Childish Gambino, voiced Miles Morales in the Ultimate Spider-Man animated series.

Miguel tries to encase Miles for just a few days, long enough to let Miles's father Jeff die back on Earth-1610, since the Spot is targeting him. Miles blasts free using his electricity powers and flees, luring the whole Spider Society onto the high speed rail of Nueva York. He fries Miguel's techno-organic suit, leaps back to the lab, and uses a machine to cocoon himself in a shell that will send him home based on the DNA of the spider that bit him, so he can save his father.

Miguel does the same to Gwen Stacy, sending her back to Earth-65 with none of her multiversal gadgets so she cannot help Miles.

Miles Runs Home Through the Rain to a World That Looks Just a Little Off

Miles dashes home through the rain, passing reflections of his friends from the 2018 film, Spider-Ham, Penny Parker, and Spider-Man Noir. But the red and green tinted world around him looks just a little off compared to the Brooklyn he left behind.

Meanwhile Miguel leads a search party of Jessica Drew and Ben Reilly to Earth-1610 to stop Miles and defeat the Spot. Back on Earth-65, Gwen makes peace with her father George, who decides to resign from the police force rather than remain a captain. He gives her a different gadget, designed by Hobie Brown, that lets her travel to 1610 to help Miles.

The Boxing Gloves and a Silence of the Lambs Style Fake-Out Reveal Miles Is in the Wrong Universe

A small detail in Miles's bedroom gives it away before anything else does: boxing gloves are now hanging from the doorknob, the room of a Miles who is still working the bag. Miles tells his mother, Rio, that he is Spider-Man, and it seems like Gwen is listening outside. Rio does not know who Spider-Man is, and for a moment it plays like she is simply out of the loop.

Then comes the reveal. Like the classic fake-out in Silence of the Lambs, where Clarice Starling raids one home while the actual action happens somewhere else, Gwen is outside a different location in a different universe entirely, standing at Miles's empty bedroom back in 1610. Miles, meanwhile, realizes he never made it home. The machine in Nueva York sent him based on the DNA of the spider that bit him, and that spider was not from 1610. It was from Earth-42, a universe with no Spider-Man at all.

Uncle Aaron Is Alive on Earth-42, and Miles's Father Is Dead

On this Earth, Uncle Aaron is still alive. He greets Miles with the same "Hey" and shoulder move callback from the first film and asks why Miles took his braids out. Aaron, still a criminal here, has been giving Rio money to help her make ends meet and has taken this universe's Miles under his wing.

The two head to the roof, where the memorial mural is not of Aaron, but of Miles's father, Jeff Morales. Jeff is dead in this universe. Miles is then knocked out and wakes up tied to the same punching bag from the 2018 film, the one he and Aaron once trained on, and the one Miles later tied Peter B. Parker to.

Miles Meets the Prowler Who Wears His Own Face

Aaron reveals that he is not the Prowler here, someone else is. A younger Prowler steps forward and unmasks, revealing the face of Miles, braids and all. The credits identify him as Miles G. Morales, voiced by Jharrel Jerome. Our Miles's shocked face is lit red on one side and blue on the other, mixing into a purple that, as I pointed out, does not naturally exist in the visible light spectrum, since blue and red sit at opposite ends of it and only our eyes blend them together, which is part of why purple so often reads as a villain color in these films.

Our Miles pleads that if he does not get home, "our dad is going to die," and Prowler corrects him: "Your dad." Miles begs, "Please, you have to let me go," and Prowler answers, "Why would I do that?" clenching his armored fist and pressing the punching bag right beside Miles's face as the Spot closes in on Jeff back on Earth-1610.

The Cliffhanger Ends With Gwen's New Band Forming to Rescue Miles

A drum solo carries us back to the film's opening image of Gwen drumming with her band, the Mary Janes, which she had left at the start of the movie. Now she says she has found a new band: herself, Peter B. Parker, Hobie Brown, Spider-Man Noir, Peni Parker, and Spider-Ham, all on course to rescue and avenge Miles. The film ends there, with no post-credit scene.

How Beyond the Spider-Verse Could Untangle This

One possible out is that Miles's father could take the George Stacy route and simply resign from the NYPD, though that feels like a technicality to me and probably would not undo the anomaly of Miles's existence as a Spider-Man. It is also possible that Miguel's interpretation of the rules of the web of life and destiny is not sacrosanct, and that rather than Miles being a mistake, the Spider-Verse might actually be stronger if more spider people were bitten by spiders from other dimensions, making them responsible not just for their own homes but for neighboring universes too.

One thing these films have taught us is that sometimes people have to live in multiple worlds at once, so maybe defeating Prowler Miles in the next film means saving him the same way, by getting him bitten by a radioactive spider from another universe. This film also established new canon events tied directly to the MCU, including Andrew Garfield's Peter Parker mourning Captain Stacy from 2012's The Amazing Spider-Man and Tobey Maguire's Peter Parker facing Uncle Ben's death, two universes already linked to the MCU through Spider-Man: No Way Home. The Spot also visited Mrs. Chen from Venom, in a universe this film labels Earth-688, and we got a live action MCU actor, Donald Glover, appearing inside an animated world. Taken together, it feels inevitable that Beyond the Spider-Verse leaves us with a live action Miles Morales who can exist in the MCU.