Supergirl ending explained: Does it have a post-credits scene?
How does the latest DCU film set up what comes next?
Warner Bros
- Matthew Trask
Published: Monday, 29 June 2026 at 4:24 pm
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*Warning: This article contains full spoilers for Supergirl.*
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The DCU universe continues with this summer's Supergirl, bringing the messy and complicated world of Kara Zor-El to the big screen in a whole new way.
Picking up after we last saw Supergirl at the end of 2025’s Superman, the film sees her on an intergalactic pub crawl to celebrate her birthday. By visiting a whole host of different worlds with red suns she is able to temporarily dull her powers just long enough to get drunk and have a good time.
It’s on this extended bender that Kara meets Ruthye, a recently orphaned girl seeking revenge against a Brigand known as Krem of the Yellow Hills. And when Kara’s beloved dog Krypto is poisoned by the evil Krem, she too joins the galaxy-spanning hunt for the evil space pirate.
If Superman was about hope and optimism in a world where it's seen as old fashioned, Supergirl is about finding the good in hopeless places. As we bounce from one weird world to the next with Kara and Ruthye, the film slowly peels back the layers on the titular superheroine. Unlike her cousin, Kara watched the slow death of her people and is burdened with trauma.
After her father managed to save Argo City from destruction alongside the rest of Krypton, the city and its residents slowly started to succumb to Kryptonite poisoning ending with Kara’s father sending her to Earth to be with her cousin.
This trauma haunts Kara throughout the film as she feels adrift and alone in the universe, driven only by the singular desire to save Krypto, her last link to home.
Based loosely on the comic Supergirl: Woman of Tomorrow, the film is closer in tone and scope to something like Guardians of the Galaxy or Star Wars than your usual superhero film and it's all the better for it.
But what happens to Krypto? Does Kara manage to save him? Does Ruthye get her revenge? Read on for a full breakdown of Supergirl’s ending.
Supergirl ending explained: How does the DC movie end?
After fighting her way across the galaxy in search of the evil Krem of the Yellow Hills and an antidote to the slow-acting poison currently killing her dog Krypto, Supergirl tracks him down to the planet Barenton.
But, upon her arrival, she quickly finds out that the planet orbits two suns, one yellow and one green, with the latter poisoning her, forcing Ruthye to drag Kara into a nearby cave where she is severely weakened.
Meanwhile, Ruthye gets taken prisoner by the Brigands and thrown into a prison on their ship. There she finds the bounty hunter Lobo who has also been taken prisoner. The cells don’t manage to hold Ruthye for long, though, as she escapes and frees Lobo just as the green sun sets and the yellow sun rises.
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Before Krem can kill the escaped Ruthye, Kara, now fully restored thanks to the yellow sun, finally faces off against the Brigands. After Krem briefly gets the upper hand when he poisons Supergirl using Kryptonite, an assist by Lobo helps her quickly recover and take down the Brigands once and for all.
That leaves Ruthye to face off against a weakened Krem, ready to take revenge for her murdered family. But an impassioned plea by Kara stays her hand and Ruthye spares Krem’s life.
Instead, Kara kills Krem, using Ruthye’s sword to finally deliver justice. It’s this moment that sets her apart from her cousin Clark. Kara has a ruthlessness that her cousin lacks, born, in part, out of the trauma of her past.
After the pair finish celebrating her birthday, a changed Kara returns to Earth where she reunites with Superman at her apartment in Metropolis (incidentally the same apartment we saw Superman take refuge in when Krypto was taken). She tells him that she plans on sticking around on Earth for a while, finally referring to the planet as home for the first time.
Does Supergirl have a post-credits scene?
No, Supergirl does not have a post-credits scene. Rumour has it that the flashback scene showing Kara’s arrival on Earth and first meeting with Superman was originally going to be the film's post-credits scene.
Given that the scene ended up in the film itself, it seems like the filmmakers didn’t find it necessary to include a post-credits scene.
When will we see Supergirl next?
Nicholas Hoult as Lex Luthor and David Corenswet as Superman in Superman. WB
Supergirl is set to have a major role in next year's Man of Tomorrow, directed by Superman filmmaker James Gunn. Alongside her cousin Clark Kent and Nicholas Hoult's Lex Luthor, Supergirl will take on the evil villain Brainiac in the upcoming film.
Man of Tomorrow isn’t being billed as a typical sequel to Superman or Supergirl and instead seems like it could be a sort of Super-family team-up movie. A mini Superman-themed Justice League if you like.
Alongside Millie Alcock’s Supergirl, the film also includes the Justice Gang, aka Green Lantern Guy Gardner, Mr Terrific and Hawkgirl, as well as the Green Lantern Jon Stewart, who is set to be introduced in this summer's Lanterns TV series.
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Supergirl is playing in cinemas now. Man of Tomorrow is due to be released on 9 July 2027.
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Matthew Trask
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