Supergirl heads to Fort Rozz, learns more about Worldkillers, and loses an ally
Women front and center.
Supergirls true strengths on display.
A sacrifice and a little old-fashioned Winn-genuity.

Credit: Michael Courtney/The CW
Yep, this episode was hotter than a blue star.
But remember, Kara threw Fort Rozz into space, and it now orbits a blue star.
This presents two problems.
First, without a yellow sun, Kara will be powerless.
And second, thanks to science reasons, blue stars are lethal to anyone with a Y chromosome.
So we cut to a diner where the worlds worst waitress is alternately insulting and ignoring customers.
Its Leslie Willis, a.k.a.
Karas been keeping tabs on her and guesses that Livewire only went straight after Reign started killing criminals.
Livewire says some of those criminals were her friends, and they didnt deserve to die.
Kara reluctantly requests her help, saying she needs someone she knows to have her back while shes powerless.
Livewire laughs but eventually agrees to help stop Reign.
Plus, Kara will control the key to the psychic dampener Psi wears.
YESSS,SUPERGIRL, THANK YOU FOR THIS LINEUP OF STRONG, COMPLEX WOMEN!
Kara unlocks Psi and takes a deep breath as she approaches the door, which Imra telepathically opens.
Her dark guide informs Reign that Supergirls entered Fort Rozz.
Reign boards her spaceship and makes for the blue star.
All of the women leap into the fight, and Psi gets knocked in the head.
When Imra helps her up, Psi hits her with telepathic mojo, sending Imra reeling.
Then the prison shakes, and a garbled message comes through from the DEO.
I got through to you, Kara points out.
Livewires unconvinced, arguing that somebody as evil as Reign deserves to die.
Then they walk into an ominous cold fog where some creepy henchwomen lurk.
when Alex gets an out-of-the-blue text from Maggie wondering if she left her passport there.
Ruby takes her hand and admits that shes being cyberbullied by a classmate.
Im not sure how ethical this is, but you know what?
(Next: Livewire flames out)
Elsewhere on Earth, Winn and Brainy are experiencing some friction.
Brainy unfavorably compares the DEOs tech to an espresso machine and alien-splains turbulence to an unamused Winn.
Onboard said ship, Psi backseat-drives while Imra tinkers with the machinery.
Then Psi starts reciting a creepy version of Sing a Song of Sixpence that heralds Reigns arrival.
Elsewhere, Kara awakens to her name being whispered.
But Reign vaporizes Jindah when the priestess back is turned (rude!
), and now Kara knows that Reigns powers dont depend on the yellow sun.
Reign accuses Kara of being helpless and afraid, but Kara fearlessly tries to appeal to Reigns goodness.
The DEO finally restores contact, and Imra warns them that Reign is on board.
Then Psi shows up, calls Reign blackbird, and blasts her with the patented Psi whammy.
Shes confused to spot Supergirl, but Reign quickly regains control and flies off.
Then sparks dance across her body and, as Kara begs her to stay, Leslie dies.
Dang it,Supergirl,you made me feel feelings!
Sam admits that she keeps losing time and worries that somethings wrong with her.
At the DEO, Kara thanks Psi and bids her farewell.
Aww, sisters doin it for themselves!
He says hes much wiser than he was a year ago and encourages her to talk to him.
You changed her heart for the better.
And you did that without the yellow sun.
That was all you.
They just need to find them before Reign does.