It: Welcome to Derry episode 1 recap and ending explained: “The Pilot” follows Lilly, Ronnie and their friends as they investigate Matty’s disappearance, only to be lured into a movie-theater massacre by IT. The episode presents Teddy, Phil and Susie as killed, while Lilly and Ronnie survive an attack by a grotesque flying, baby-like manifestation.
Spoiler warning: This recap explains the opening, Matty’s disappearance, the “Ya Got Trouble” clue, the theater sequence, the creature’s likely identity and the ending twist.
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Key takeaways
- Episode 1, “The Pilot,” premiered in the United States on October 26, 2025, as an HBO Original episode of IT: Welcome to Derry.
- Matty’s disappearance leads Lilly Bainbridge, Teddy Uris, Phil Malkin, Ronnie Grogan and Susie Malkin to investigate the movie theater.
- Lilly hears Matty’s voice singing “Ya Got Trouble” through her bathtub drain, establishing the song as bait rather than a simple musical reference.
- A grotesque flying, baby-like manifestation attacks the children in the theater; the episode presents Teddy, Phil and Susie as killed while Lilly and Ronnie survive.
- The creature is best understood as another manifestation of IT, not a separately confirmed monster with an official name.
- The massacre deliberately overturns the expectation that the entire group will become a permanent child ensemble like the Losers’ Club.
It: Welcome to Derry episode 1 recap: What happens in “The Pilot”?
Spoilers for the entire first episode follow. The episode opens with Matty trying to escape Derry, but his apparent route to safety becomes a supernatural trap. The people and figures around Matty are revealed as part of a monstrous deception, ending with the appearance of a blood-covered, baby-like creature that attacks him.
The opening immediately establishes that IT: Welcome to Derry will not spend its premiere slowly hiding the entity’s violence. The threat is already active, and IT is not limited to the familiar image of Pennywise the dancing clown. The opening manifestation is grotesque, airborne and deliberately recognizable as something infant-like without being remotely comforting.
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“The Pilot” premiered in the United States on October 26, 2025. The Warner Bros. Discovery HBO Max pressroom listing identifies the series among that month’s HBO Max releases, while the episode listing for “The Pilot” records the episode’s title and release information.
What happened to Matty?
Matty disappears after attempting to get out of Derry, and the episode strongly implies that IT has already claimed or manipulated him before the children begin their search. Matty’s fate is presented through horror imagery rather than a straightforward explanation: the opening shows his escape turning into an encounter with the creature, while later scenes use his voice and image to lure his friends.
Lilly Bainbridge becomes the first member of the group to receive a direct supernatural signal. While using her bathtub, Lilly hears a voice coming from the drain. The voice sings “Ya Got Trouble,” the song from The Music Man, and Lilly recognizes the voice as Matty’s.
The song matters because IT is using recognition as a weapon. Lilly does not hear an arbitrary noise; she hears a familiar child singing a familiar song. The apparent message suggests that Matty may still be reachable, giving Lilly and the others an emotional reason to follow the mystery. Both Sky’s Episode 1 explanation and Time’s premiere-ending analysis identify the voice and song as central parts of the episode’s trap.
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Lilly, Teddy Uris, Phil Malkin, Ronnie Grogan and Phil’s sister, Susie, form the child group that investigates Matty’s disappearance. Their search leads them toward the movie theater, the last location associated with Matty and the place where the episode’s mystery becomes an open attack.
The group initially resembles the beginning of a familiar IT story: frightened children form an alliance, compare strange experiences and investigate a danger that adults do not fully recognize. The resemblance is intentional, but the episode later reveals that this is not simply a new version of the Losers’ Club origin story.
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- It By Stephen King (2011-05-12)
What happens in the movie theater?
The movie theater is the children’s final trap. Once inside, the group encounters “Ya Got Trouble” again and sees Matty apparently connected to the movie imagery. Matty is shown holding a bundle, creating the impression that the screen may contain an answer to his disappearance.
The screen does not provide a rescue. The theater turns the children’s investigation into a staged spectacle, with the image of Matty functioning as an invitation from IT. When the grotesque creature from the opening bursts into the sequence, the apparent mystery abruptly becomes a massacre.
The episode presents Teddy, Phil and Susie as killed during the theater attack. Lilly and Ronnie survive the sequence. That distinction matters: the episode establishes what viewers are shown, but it is more precise to say that these characters are presented as killed than to make a broader claim about their ultimate franchise status without discussing later episodes.
| Character | Role in Episode 1 | Episode 1 outcome |
|---|---|---|
| Lilly Bainbridge | Hears Matty through the bathtub drain and helps lead the investigation | Survives the theater massacre |
| Ronnie Grogan | Joins Lilly and the others in searching for Matty | Survives the theater massacre |
| Teddy Uris | Member of the child investigation group | Presented as killed in the theater attack |
| Phil Malkin | Member of the group and Susie’s brother | Presented as killed in the theater attack |
| Susie Malkin | Phil’s sister and member of the group | Presented as killed in the theater attack |
| Matty | Missing child whose disappearance drives the investigation | Used by IT as the apparent subject of the rescue mystery |
Who is the flying baby monster?
The flying baby monster is best understood as another manifestation of IT. Episode 1 does not give the creature a formal species name or establish it as an independent monster, so fan labels should not be treated as confirmed canon.
The creature’s infant-like appearance is part of the horror. A baby normally suggests vulnerability, dependence or new life; this manifestation turns those associations into something predatory and unnatural. The result is not a “baby” in any ordinary sense but an intentionally wrong image that makes innocence itself feel unsafe.
The design also fits the series’ 1960s setting and its broader interest in historical fear. Coverage of the premiere reports that Andy Muschietti connected the manifestation’s design to Cold War-era fears about radioactivity. TV Insider’s creator and cast discussion of the opening provides that context.
Why does IT use Matty’s voice and “Ya Got Trouble”?
IT uses Matty’s voice and “Ya Got Trouble” to exploit the children’s desire to find and rescue someone they know. Lilly hears a recognizable voice in an ordinary household place, and the group later encounters Matty through the theater screen. Each familiar detail makes the trap appear personal and solvable.
The repeated song is therefore both bait and warning. “Trouble” is not just a reference to The Music Man; in the episode’s context, the song becomes an alarm that the children have entered a situation governed by IT. The force is not merely attacking from outside. IT is arranging familiar sounds, faces and images so that the children walk toward danger voluntarily.
Why did IT kill the children so early?
IT kills or apparently kills several members of the apparent main child group so that Welcome to Derry does not simply repeat the films’ ensemble structure. Before the theater sequence, viewers can reasonably expect Lilly, Teddy, Phil, Ronnie and Susie to become the series’ continuing young protagonists. The massacre destroys that expectation in the first episode.
The survivors are now Lilly and Ronnie, while the deaths of Teddy, Phil and Susie change the story’s emotional center. The audience is also warned that apparent protagonist status offers no protection in this version of Derry.
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What does the theater scene mean?
The theater scene shows how IT turns spectatorship into helplessness. The children enter expecting the screen to reveal what happened to Matty, but the screen instead becomes part of the entity’s performance. They are not safely watching a frightening story; they have been placed inside one.
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The location also broadens the episode’s idea of how Derry’s evil works. IT can imitate a voice, manipulate a remembered song, appear through images and invade a communal entertainment space. Ordinary places do not merely conceal supernatural danger; they can be converted into instruments that make danger feel familiar.
The massacre consequently carries both a plot function and a thematic one. It removes characters the audience thought it understood while showing that Derry’s institutions and shared experiences can become vehicles for violence.
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Is Welcome to Derry connected to Stephen King’s IT book?
IT: Welcome to Derry is connected to Stephen King’s novel and to the 2017 and 2019 film adaptations, but Episode 1 should not be described as a direct adaptation of one specific chapter. The series is better understood as a prequel expansion that draws on the novel’s mythology and its passages about Derry’s history.
Stephen King’s official bibliography identifies IT as a September 1986 novel. If Episode 1 leaves you wanting more of Derry’s history, Stephen King’s IT novel is the source text to explore next, and Simon & Schuster also lists an official publisher edition. The book can provide additional mythology and historical context, but not every event in the television episode appears in the novel.
| Element | Episode 1’s approach | Relationship to the films and novel |
|---|---|---|
| Opening threat | Begins with Matty’s failed attempt to escape Derry and a brutal supernatural attack | Uses a child-centered disappearance or death to announce the threat, but expands the violence into a group massacre |
| Creature design | Emphasizes a grotesque flying, baby-like manifestation | Shows that IT is not limited to the films’ most recognizable Pennywise image |
| Child ensemble | Introduces a group and then removes Teddy, Phil and Susie in the premiere | Reverses the expectation of a stable Losers’ Club-style ensemble |
| Derry mythology | Places the horror in an earlier period and expands the town’s history | Builds on the novel’s Derry-history and interlude material rather than adapting one chapter directly |
| Fear mechanism | Uses voices, songs, screens and familiar locations as bait | Extends the franchise idea that IT weaponizes personal fear and recognition |
What is the ending’s main implication?
The ending implies that IT’s power in Derry is broader than one familiar face appearing in isolated scares. IT can borrow identities, arrange images and reshape ordinary cultural spaces into traps. Matty’s voice makes the threat intimate; the theater makes the threat public; the creature’s unfamiliar form makes the threat unpredictable.
For Lilly and Ronnie, surviving the theater does not mean solving Matty’s disappearance or escaping Derry’s influence. Their survival leaves them as witnesses to an attack that the other children may not be able to explain, while the audience now knows that the series can discard an apparently central group without warning.
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That is the decisive ending twist: Welcome to Derry is using the mythology of IT to explore the town’s history and IT’s changing manifestations, not simply to replay the films with a different set of children.
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Frequently Asked Questions
Who died in Welcome to Derry episode 1?
The episode presents Teddy Uris, Phil Malkin and Susie Malkin as killed in the movie-theater massacre. Lilly Bainbridge and Ronnie Grogan survive the attack shown in Episode 1.
Who is the flying baby monster in Welcome to Derry?
The flying baby monster is best understood as another manifestation of IT. The episode does not establish a formal name or separate canonical identity for the creature.
Why does IT use Matty’s voice and “Ya Got Trouble”?
Matty’s voice and the song “Ya Got Trouble” are bait. IT uses familiar recognition to make Lilly and the other children believe that Matty can be found or rescued at the theater.
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The series is connected to Stephen King’s IT novel and the 2017 and 2019 films, but Episode 1 is a prequel expansion drawing on Derry’s history and the novel’s mythology rather than a direct adaptation of one chapter.
The Bottom Line
Bottom line: Episode 1’s theater massacre is both the plot’s major shock and the prequel’s mission statement. IT lures the children with Matty’s voice and familiar images, attacks in a new baby-like form, presents Teddy, Phil and Susie as dead, and leaves Lilly and Ronnie alive as the story’s surviving witnesses. The episode draws from IT mythology and Derry history without being a direct adaptation of one novel chapter.
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