Other Mommy (2026): Ending Explained

The film opens with a quote about demons coveting the one thing humans have: being alive. At first, Bela is the only one who can see Other Mommy, who appears at night, in the dark, and copies her mother Ursula (Chastain plays both roles). One day Ursula comes home early and offers to make lunch, but Bela realizes it's actually Other Mommy and runs. Her father, known as Daddo, smells a fire in the kitchen, sees the entity hiding under a table, and is so startled he crashes through a window. At the family's anniversary party, Ursula sees Other Mommy for the first time. The demon also shows it can take other forms, such as the babysitter. The family flees to Uncle Frank's house. There it comes out that Ursula has been having an affair with Frank, Daddo's best friend. When Bela says she wants Frank gone, Other Mommy kills him in front of everyone. A trip to a kids' play center doesn't shake the entity, so the family retreats to Ursula's mother's beachfront mansion, where she hires a team of ghost hunters. They turn out to be scammers who have never actually summoned anything, and the demon kills some of them. With nowhere left to run, the family goes home for the finale.

The demon preys on Bela because she's already sad: she senses her parents are hiding something from her. At home, Ursula finally tells her the truth. She was married to another man when she met Daddo. When she became pregnant, the baby wasn't Daddo's, but he chose to start a family with her anyway. Ursula also admits she never wanted to be a mother. Bela's real father is Ursula's ex-husband.

Devastated, Bela runs to her room and screams for Other Mommy, telling her she's ready to let her into her heart. In the bathroom, the demon appears in Bela's own form and asks for a hug, then asks one last time for permission to enter her heart. Bela instead attacks and tears the demon apart. She was tricking it, and she wins by facing her grief rather than trying to escape it.

The deeper logic: Other Mommy offers to take away Bela's pain, but accepting would mean surrendering her whole life to a manipulator. Bela rejects that, drawing on something her grandmother told her, that pain is an unavoidable part of life, and on the realization that loving people doesn't mean they'll never disappoint you. Her family survives, flawed but intact, and the film closes on them together.

This is a major departure from the novel, where Bela agrees to let Other Mommy in, the entity takes her body, and the real girl is left in a void while the demon lives on as her.

Cathartic and emotional, with a final shushing scare after the credits that suggests the story isn't entirely closed.

Survives; defeats the demon and keeps her body.

Survives.

Survives.

Killed by Other Mommy in front of the family after Bela says she wants him gone.

Some are killed by the demon.

Her fate isn't clearly confirmed in the sources reviewed; her advice about pain is what helps Bela in the finale.

Torn apart by Bela, though the post-credits scene suggests it isn't entirely gone.

A trickster demon, apparently centuries old, that has never been alive and wants a human body. The film doesn't explain its origin beyond that.

It can't simply take her. Her permission is the one thing it needs, which is why it keeps tempting her instead of attacking directly.

No. In the film she defeats the demon and survives. In the novel she lets it in and it takes over her body.

She's confronting her grief and the truth about her family, then uses the moment to trick the demon into appearing, so she can destroy it.

It's a short stinger, not a continuation. It's most easily read as a hint that the entity may not be fully gone.

The demon isn't tied to a location. It follows Bela, so staying at Frank's house, the play center, or the mansion makes no difference.