With the series premiere of Supergirl set to air tomorrow, CBS has released seven new clips and a behind-the-scenes video from this highly-anticipated new series. The first clip shows Kara Zor-El (Melissa Benoist) experimenting with costumes alongside her work colleague Winn Schott (Jeremy Jordan), while the second clip features Kara asking her sister Alex (Chyler Leigh) to help her pick out an outfit for her blind date. The third scene shows Kara saving her sister's life by stopping her plane from crashing, while the other clips give us a glimpse at the villainous Vartox (Owain Yeoman) Cat Grant (Calista Flockhart) and Jimmy Olsen (Mehcad Brooks).

If that wasn't enough, we also have a behind-the-scenes video with stars Melissa Benoist, David Harewood (Hank Henshaw), Chyler Leigh (Alex Danvers), Calista Flockhart (Cat Grant), Mehcad Brooks (Jimmy Olsen), Jeremy Jordan (Winn Schott) and executive producer Greg Berlanti, where the stars shed new light on the Phantom Zone and much more. Supergirl debuts in a special time tomorrow night, premiering at 8:30 PM ET, before moving to its regular time slot at 8 PM on Monday, November 2.

Supergirl is an action-adventure drama based on the DC Comics character Kara Zor-El (Melissa Benoist), Superman's (Kal-El) cousin who, after 12 years of keeping her powers a secret on Earth, decides to finally embrace her superhuman abilities and be the hero she was always meant to be. Twelve-year-old Kara escaped the doomed planet Krypton with her parents' help at the same time as the infant Kal-El. Protected and raised on Earth by her foster family, the Danvers, Kara grew up in the shadow of her foster sister, Alex (Chyler Leigh), and learned to conceal the phenomenal powers she shares with her famous cousin in order to keep her identity a secret.

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Years later at 24, Kara lives in National City assisting media mogul and fierce taskmaster Cat Grant (Golden Globe Award winner Calista Flockhart), who just hired the Daily Planet's former photographer, James Olsen (Mehcad Brooks), as her new art director. However, Kara's days of keeping her talents a secret are over when Hank Henshaw (David Harewood), head of a super-secret agency where her sister also works, enlists her to help them protect the citizens of National City from sinister threats. Though Kara will need to find a way to manage her newfound empowerment with her very human relationships, her heart soars as she takes to the skies as Supergirl to fight crime.

Supergirl will also feature a number of guest stars such as Chris Browning (Reactron), Jenna Dewan-Tatum (Lucy Lane/Superwoman), Brit Morgan (Livewire) and Iddo Goldberg (Red Tornado). The supporting cast includes Laura Benanti and Jeremy Jordan as Winn Schott, but stay tuned to learn about more casting additions as we get closer and closer to the series premiere. Take a look at the latest footage from Supergirl, to get ready for the series premiere tomorrow night.