Believe it or not, but a simple text can save the entire world. Of course, that text should probably include the “S”/ Superman / Supergirl symbol (“S” = hope) for the brainwashed masses of National City – locked into mindless drone mode by a Kryptonian weapon, Myriad – to shake it off and become their beautifully individual, idiosyncratic selves all over again. All of that happens within the first ten minutes of Supergirl’s stirring, emotion-lade season ender, “Better Angels.” All it takes is Supergirl (Melissa Benoist) – inspired by one of Cat Grant’s (Calista Flockhart) seemingly endless supply of pep talks – giving a heartfelt speech to the Kryptonian-controlled citizens of National City about the paramount value of individuality, hope, and the “everyone is a hero” thing for Myriad’s hold over National City’s citizens to break, if only temporarily (temporarily because we still have 30-odd minutes to go in the season finale).
Before Supergirl can give her speech or send the most inspirational emoji of all time to the citizens of National City, she has a more immediate problem to overcome: Her sister, Alex Danvers (Chyler Leigh). Captured by Non (Chris Vance) and Indigo (Laura Vandevoort) in the final minutes of episode 19, “Myriad,” the mind-controlled Alex has been turned into a Kryptonite sword-wielding opponent for Supergirl, forcing Supergirl to literally pull her punches or risk injuring her adopted human sister. Fighting with both arms tied behind her back (not literally this time, just figuatively) results in almost certain defeat for Supergirl, but the sudden appearance of Hank Henshaw/Martian Manhunter (David Harewood) and Eliza (Helen Slater), Alex’s biological mother (and Supergirl’s adopted mother), stops Alex from dispatching her sister. Henshaw ad Eliza’s weapon of choice? The Power of Love.
It’s the Power of Love for family, friends and humanity that compels Supergirl to confront Non and Indigo, a 2-on-1 battle Supergirl apparently can’t win. Maxwell “mini-Lex Luthor” Lord (Peter Facinelli), temporary member of Team Supergirl, doesn’t shy away from telling Supergirl she can’t win. She might save the world and becomes the world’s second greatest superhero (behind her cousin, of course), but she’ll likely lose her life in the process. Taking Lord at his word, Supergirl/Kara goes on a goodbye tour, expressing gratitude, among other feelings, to the key people in her life, including best pal Winn (Jeremy Jordan), future boyfriend James Olsen (Mehcad Brooks), and even Henshaw, still recovering from wounds suffered in last week’s episode, before flying off to face Non and Indigo and stop Non, a misguided villain turned genocidal super-villain thanks to Indigo’s Lady MacBeth imitation, from using the Myriad weapon to permanently wipe out humanity (the weapon’s settings go to 11 apparently).
Supergirl saves the day and the world, of course, but not without a key assist from Martian Manhunter. Superman might be able to fly in outer space and somehow survive relatively unscathed without oxygen in the comics and in multiple big-screen incarnations, but Supergirl can’t, leaving her stranded in outer space, presumably doomed to die, after she carries Fort Rozz, the source of so much pain and misery, not to mention super-villains of the week, for practically the entirety of season 1, into outer space where the Myriad weapon can no longer do any harm. It takes a resourceful Alex, temporarily borrowing the space pod a young Supergirl/Kara Zor-El used to make the voyage from a dying Krypton to Earth, to save Kara and bring her back to her family and friends where relatively happy endings await everyone.
In just the last few minutes of the season finale, Grant gives Kara a promotion that includes a windowless office, Henshaw receives a full presidential pardon and reinstatement as the head of the DEO (Department of Extra-Normal Operations), and Kara and Olsen exchange their first baggage-free kiss during a family and friends get together. The fate of Kara and Alex’s father, Jeremiah (Dean Cain), however, remains unresolved, a dangling plot thread that will be addressed sometime in season 2 (as of press time, CBS has yet to renew Supergirl for a second season). But that’s not all. Before the party gets too wild, a flash (not “The Flash”) across the night sky alerts Supergirl and the Martian Manhunter to the arrival of another Kryptonian space pod. While Supergirl gets a peek inside the pod, expressing surprise and disbelief, viewers are left in the dark as to the occupant’s identity and his or her role in season two’s immediate and long-term arc.