film / 2026
Supergirl
Kara Zor-El crosses the galaxy with a bereaved girl after Krypto is poisoned by the killer they are pursuing.
Verified facts
- Runtime
- 1h 48m
- Director
- Craig Gillespie
- Released
- 2026
- Origin
- United States
PlotGeeks explainer signals
Why read this explainer
Kara seeks an antidote for Krypto, while Ruthye wants revenge for her family. Their shared pursuit of Krem brings different losses and immediate needs together.
PlotGeeks note
Krypto's poisoning gives Kara an urgent reason to pursue the man Ruthye already wants dead. Traveling together tests how far their common grief can justify the same response.
Connected knowledge
Connected in PlotGeeks
Related explainers and browse pages for Supergirl.
- Appears in Superman and Supergirl in DCU order
See where Supergirl belongs in the listed reading and viewing orders.
- Explore Grief
These stories show grief as an active force: it can distort judgment, deepen care, or keep a person fixed in the past.
Timeline
Major events
- Argo City is lost
Kara reaches Earth after surviving a second destruction of home and family.
- Krypto is poisoned
A private attack gives Kara the same desire for vengeance she rejected in Ruthye.
- Kara and Ruthye pursue Krem
The reluctant partnership exposes the difference between rescue and revenge.
- The antidote is recovered
Saving Krypto leaves Kara and Ruthye to decide what justice requires beyond retaliation.
Story in 60 Seconds
The short version
Kara survives Krypton's destruction and Argo City's later poisoning before reaching Earth, where her cousin Kal-El is already Superman. As an adult she spends much of her time off-world. On her birthday she meets Ruthye Marye Knoll, whose family was murdered by brigand leader Krem of the Yellow Hills. Kara initially refuses Ruthye's request for vengeance. When Krem steals Kara's ship and poisons Krypto, Kara pursues him for the antidote and reluctantly takes Ruthye along. Their journey through hostile worlds forces Kara to confront both her own displacement and Ruthye's determination to kill Krem.
Spoiler sectionEnding ExplainedShow ending detailsHide ending details
Kara and Ruthye recover the antidote and save Krypto while bringing Krem's campaign to an end. Kara prevents grief from deciding every action, and Ruthye must choose what justice will mean after reaching the man she has pursued. Returning from the journey, Kara has not erased Krypton's loss or become settled on Earth, but she has accepted responsibility for Ruthye and for the kind of power she wants to use.
Original context
Why it matters
Responsibility during displacement
Kara's care for Krypto and Ruthye gives the journey obligations beyond her own wandering. Its resolution leaves her losses intact while changing whom she has agreed to protect.
Key turning points
Krypto is poisoned
Kara initially refuses Ruthye's request for revenge. The attack on Krypto gives her an immediate need to follow Krem and makes the girl's anger easier to understand.
Character links
Who connects to whom
Character motivations
An antidote and an avenged family
Kara and Ruthye travel toward the same opponent for different reasons. Keeping Krypto alive requires Kara to act while Ruthye's bereavement directs her toward retaliation.
Explore the story
Creators, themes, and characters
Reading and watching order
Where this story fits
Films
Superman and Supergirl in DCU order
Watch Superman before Supergirl. This is the release order of the first two supported DCU films and preserves Kara's introduction before her solo story.
2 supported titles