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TechRadar
Tom Power

Supergirl: everything we know so far about the next DC Universe movie (release date, trailer, cast, plot)

Kara Zor-El smiling with the sun behind her while she wears her Supergirl outfit.
Supergirl: key information

- Will be released on June 26
- Trailers released in December 2025 and April 2026
- Milly Alcock plays the titular superhero
- Rest of its cast has been confirmed
- Adapts the story told in Supergirl: Woman of Tomorrow
- Will add new layers to the graphic novel's plot
- Unclear how it'll impact the wider DCU

Who's ready to see Supergirl soar into theaters for the first time in over 40 years? I'm guessing you are, otherwise you wouldn't be here.

Well, with the next DC Universe (DCU) movie set to take flight on June 26, you'll definitely want to know everything about it before its arrival. This guide will run you through every key detail about the film formerly known as Supergirl: Woman of Tomorrow, including its trailers, confirmed cast, story specifics, and more. So, grab your Krypto plush toy and let's dive in together.

Supergirl release date

As I mentioned above, Supergirl will be released on Friday, June 26.

With its marketing campaign ramping up in the months since its first trailer dropped (more on that below), there's absolutely no way it won't meet that launch date, either. You can be rest assured, then, that it won't suffer from a last-minute release delay.

Supergirl trailer

The DCU Chapter One movie's first trailer made its way online last December. For more on what it tells about the upcoming film, my Supergirl trailer breakdown article should be your next port of call.

Three and a half months after its predecessor's arrival, a new Supergirl trailer was also unveiled.

For the most part, it looks like it'll authentically adapt Supergirl: Woman of Tomorrow's plot. If you're a fan of that comic book series, though, there are some significant changes you need to be aware of — starting with who'll appear in Kara Zor-El's next silver screen offering...

Supergirl confirmed cast

Unsurprisingly, Supergirl will be the lead in her self-titled DCU movie (Image credit: DC Studios/Warner Bros. Pictures)

Potential spoilers follow for Supergirl.

Here's the movie's confirmed cast so far:

  • Milly Alcock as Kara Zor-El/Supergirl
  • Eve Ridley as Ruthye Marye Knoll
  • Matthias Schoenaerts as Krem
  • Jason Momoa as Lobo
  • David Krumholtz as Zor-El
  • Emily Beecham as Alura In-Ze
  • David Corenswet as Clark Kent/Superman
  • Ferdinand Kingsley as Elias Knoll
  • Diarmaid Murtagh as Drom Baxton

Want more information on all of the above? My Supergirl cast and character guide is packed with details on each actor, who they're playing, and where you might have seen them before, so head over once you've read through this article.

Supergirl story synopsis and speculation

Supergirl will take its cue from 2021's Woman of Tomorrow comic book series (Image credit: DC Studios/Warner Bros. Pictures)

Possible spoilers follow for Supergirl.

Here's the official logline for Supergirl : "When an unexpected and ruthless adversary strikes too close to home, Kara Zor-El, aka Supergirl, reluctantly joins forces with an unlikely companion on an epic, interstellar journey of vengeance and justice."

That plot brief will sound familiar to long-time DC comic book fans. Indeed, this film is heavily inspired by Supergirl: Woman of Tomorrow, aka the eight-issue graphic novel written by Tom King and drawn by Bilquis Evely.

Originally, Supergirl had the aforementioned comic book series subtitle. However, last June, Gunn confirmed its title had been shortened to Supergirl, adding that he was "sick" of seeing films come packaged with secondary headers.

Just as he is in Woman of Tomorrow, Krem will be this story's main villain (Image credit: DC Studios/Warner Bros. Pictures)

Given the character and narrative additions to this movie (more on these shortly), that name revision appeared to be Gunn's way of signalling that Supergirl won't directly adapt Woman of Tomorrow's narrative. However, David Krumholtz told Nerdtropolis that it's "very true to the graphic novel", so we can expect the same story — give or take a few narrative tweaks for reasons — to be told.

We've already been given a glimpse of how authentic Supergirl will be to its literary counterpart, too. In January 2025, Gunn revealed its first behind-the-scenes image, which showed Alcock's Kara Zor-El in a place that'll be very familiar to DC fans.

The footage we've seen similarly indicates that this film will closely follow its source material's story, including the main reason why Kara agrees to team up with Ruthye.

Indeed, during an encounter with Krem, Krypto is badly poisoned. The only way to save his life is to find Krem, retrieve the antidote in his possession, and administer it before it's too late, hence why Kara agrees to aid her young new companion.

If Krypto dies, we riot (Image credit: DC Studios)

But who are Ruthye and Krem, and why does Kara become wrapped up in their feud? For those who haven't read the comics: Kara crosses paths with the young warrior, who enlists Kara's help to find Krem, a space pirate responsible for killing Ruthye's dad.

I'll refrain from spoiling the rest of Woman of Tomorrow's story. Based on what else Supergirl's trailers have teased, though, we have a clear ideas of how it'll expand on Supergirl: Woman of Tomorrow's plot.

The first of those changes is the inclusion of Lobo. The near-immortal mercenary was originally part of the graphic novel, but was cut from the story late on. As Gunn revealed last June, though, Lobo is now not only part of this movie's plot, but also vital to how it plays out.

I fully expect Jason Momoa's Lobo to be a scene-stealer in Supergirl (Image credit: DC Studios/Warner Bros. Pictures)

Elsewhere, the destruction of Kara and Superman's planet Krypton, Kara's home city of Argo, her first encounter with Krypto, and family life will be explored further in one of this year's most exciting new movies.

"We do really thoroughly investigate Argo and Krypton," director Craig Gillespie told Entertainment Weekly (EW). "It's so fundamental to who she is as a person and what she goes through in her formative years there. It makes you understand why she is where she is with her personality, and the self-destructive nature that she has as we meet her at the beginning of the film."

Away from those storytelling tweaks, we also have an idea of the film's runtime and age rating.

Where the latter is concerned, Supergirl: Woman of Tomorrow is a pretty dark and gritty space western, so its live-action interpretation could push the boundaries of what's considered to be a family-friendly or parental guidance (PG) film.

Speaking to a roundtable of journalists, which TechRadar attended, last August, Gunn dropped a big hint that Supergirl will carry a PG-13 rating in the US. It won't be child-friendly, then, but it won't be a movie that's off-limits to anyone under 15 years old, either.

As for how long it'll be: last December, Gunn's fellow DC Studios co-chief Peter Safran told the Phase Zero podcast that it'll be under two hours. More recently, Gillespie told Collider that its current runtime is circa one hour and 50 minutes, which includes its credits.

Considering how extensive Woman of Tomorrow's story, I hope serious corners haven't been cut from a plot perspective. I've already voiced my slight concerns that Supergirl might not be the comic book adaptation I was hoping for, but I'm still relatively optimistic that its narrative hasn't been cut to pieces for its big-screen retelling. I guess we'll find out for sure when it's released!

How might Supergirl impact the DCU?

Kara Zor-El is reportedly set to appear in 2027's Superman sequel (Image credit: DC Studios/Warner Bros. Pictures)

The short answer is: I don't know. Chatting to Rolling Stone, Gunn said Supergirl will be "its own thing", so it might be a standalone space opera with, Kara's scene-stealing cameo in 2025's Superman film aside, little to no connective tissue to the rest of the DCU.

That said, reliable industry insider Atlanta Filming recently suggested that Milly Alcock was seen on the set of Man of Tomorrow, aka the Superman follow-up that's due to arrive in theaters next July. If true, we can expect to see Kara show up in some capacity.

Whether she does or not, Supergirl is being positioned as one of the most important characters in the DCU. Indeed, last May, Warner Bros. CEO David Zaslav told investors that Supes and his cousin, plus Wonder Woman and Batman, are the DCU's "big asset builders" (per Yahoo).

Of course, in light of Paramount Skydance's possible buyout of Warner Bros, Zaslav's comments may not ring as true as they did back then. So, we'll have to see what the future holds for Kara and the wider DCU if that takeover is ever approved.

For more DCU coverage, find out what we know so far about Lanterns, get the full lowdown on Clayface, see what's what with Man of Tomorrow, and learn more about Creature Commandos season 2.

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