Twenty-four-year-old Kara Zor-El, who was taken in by the Danvers family when she was 13 after being sent away from Krypton, must learn to embrace her powers after previously hiding them. The Danvers teach her to be careful with her powers, until she has to reveal them during an unexpected disaster, setting her on her journey of heroism.
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see all options Availability data: JustWatch
- Seasons
- 6
- Episodes aired
- 126
- Latest aired
- S06E19
- Total runtime
- 3d 16h
Timeline when each season aired
- Season 1 October 2015 – April 2016 20 episodes
- Season 2 October 2016 – May 2017 22 episodes
- Season 3 October 2017 – June 2018 23 episodes
- Season 4 October 2018 – May 2019 22 episodes
- Season 5 October 2019 – May 2020 19 episodes
- Season 6 March 2021 – November 2021 20 episodes
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S01E01 Pilot
October 26 · 46min find the promo
Show synopsis
After 12 years of keeping her powers a secret on Earth, Kara Zor-El, Superman's cousin, decides to finally embrace her superhuman abilities and be the hero she was always meant to be.
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S01E02 Stronger Together
November 2 · 42min find the promo
Show synopsis
When Kara’s attempts to help National City don't go according to plan, she must put aside the doubts that she -- and the city's media -- has about her abilities in order to capture an escapee from the Kryptonian prison, Fort Rozz. Also, Cat pressures James to use his connection to Superman to get her an interview with Supergirl.
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S01E03 Fight or Flight
November 9 · 42min find the promo
Show synopsis
Supergirl’s powers are tested when Reactron, one of Superman’s formidable enemies, arrives in National City and targets the young hero. Also, Cat plans to run an exposé on Supergirl.
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S01E04 Livewire
November 16 · 42min find the promo
Show synopsis
Kara's Thanksgiving may be ruined when she suspects her foster mother, Dr. Danvers, who is coming to town, disapproves of her new role as a superhero. Also, when an accident transforms a volatile CatCo employee into the villainous Livewire, she targets Cat and Supergirl.
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S01E05 How Does She Do It?
November 23 · 42min find the promo
Show synopsis
Kara’s two identities are stretched thin when Supergirl must protect National City from a series of bombings and Kara is tasked with babysitting Cat’s son, Carter. Also, James is conflicted when his ex-girlfriend Lucy Lane seeks to rekindle their relationship.
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S01E06 Red Faced
November 30 · 42min find the promo
Show synopsis
Personal and professional stress get the better of Kara when she goes too far during a training exercise against Red Tornado, a military cyborg commissioned by Lucy Lane’s father, General Sam Lane. Also, Cat’s tough exterior is shaken by a visit from her judgmental mother, Katherine, and Alex enlists Winn to look into her father’s mysterious death.
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S01E07 Human for a Day
December 7 · 42min find the promo
Show synopsis
Kara and her friends must rely on their inner strength and courage when an earthquake strikes National City. Also, Alex’s mistrust of Hank reaches a breaking point when the earthquake traps them in the DEO with Jemm, a powerful alien escapee.
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S01E08 Hostile Takeover
December 14 · 42min find the promo
Show synopsis
Kara goes toe-to-toe with Astra when her aunt challenges Kara’s beliefs about her mother. Also, Cat is threatened with being removed as the CEO of CatCo after a hacker exposes her private and damaging emails.
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S01E09 Blood Bonds
January 4 · 42min find the promo
Show synopsis
With Astra in captivity at the DEO, her husband, Non, captures Hank, leading to a tense standoff between the two sides. Also, Kara continues to refute Cat's allegations that she is Supergirl.
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S01E10 Childish Things
January 18 · 42min find the promo
Show synopsis
Kara does her best to support Winn when his father, the supervillain Toyman, breaks out of prison and seeks out his son for unknown reasons. Also, Cat offers Lucy a job at CatCo and Alex asks Hank to use his powers to help uncover Maxwell Lord's plan.
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S01E11 Strange Visitor from Another Planet
January 25 · 42min find the promo
Show synopsis
Kara must help Hank face his painful past when a White Martian, a member of the alien race that wiped out his people, kidnaps Senator Miranda Crane, an anti-alien politician. Also, Cat's estranged son, Adam, arrives in National City.
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S01E12 Bizarro
February 1 · 42min find the promo
Show synopsis
Kara faces off against her mirror image when Bizarro, a twisted version of Supergirl, sets out to destroy her. Also, Kara grows closer with Cat’s son, Adam.
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S01E13 For The Girl Who Has Everything
February 8 · 42min find the promo
Show synopsis
Kara’s friends must find a way to save her life when a parasitic alien attaches itself to her and traps her in a dream world where her family is alive and her home planet was never destroyed. Also, Alex, Hank and the DEO must fend off a Kryptonian attack while Kara is out of commission.
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S01E14 Truth, Justice and the American Way
February 22 · 42min find the promo
Show synopsis
Supergirl does battle with the deadly Master Jailer, who is hunting and executing escaped Fort Rozz prisoners. Also, Cat hires a second assistant, Siobhan Smythe, who immediately tries to one-up Kara, and Kara and James disagree over the DEO's methods.
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S01E15 Solitude
February 29 · 42min find the promo
Show synopsis
Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo, a dangerous being who can transport via the Internet and who has a connection to Kara’s past. Also, James’s relationship with Lucy reaches a crossroads.
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S01E16 Falling
March 14 · 42min find the promo
Show synopsis
Kara turns on her friends and the citizens of National City after being exposed to Red Kryptonite makes her malicious and dangerous. Also, Cat appears on THE TALK to discuss Supergirl.
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S01E17 Manhunter
March 21 · 42min find the promo
Show synopsis
J'onn J'onzz reveals the details of meeting Kara and Alex's father, Dr. Jeremiah Danvers, and assuming Hank Henshaw's identity. Also, Kara debates trusting someone new with her secret identity and Siobhan plots against Kara.
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S01E18 Worlds Finest
March 28 · 43min find the promo
Show synopsis
Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.
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S01E19 Myriad
April 11 · 42min find the promo
Show synopsis
Kara must find a way to free her friends when Non and Indigo use mind control to turn National City’s citizens into their own army.
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S01E20 Better Angels
April 18 · 42min find the promo
Show synopsis
Supergirl is forced to do battle with an unexpected foe and must risk everything – including her life – to prevent Non and Indigo from destroying every person on the planet.