Though the pilot of CBS's "Supergirl" series leaked online months ago, the network has finally released the official synopsis of the episode.

The DC Comics-based show centers on Kara Zor-El (Benoist), a Kryptonian stranded on Earth following the destruction of her home planet Krypton. Assuming the name Kara Danvers, she decides to come out of hiding at the age of 24 and really use her super abilities for good. "Supergirl" arrives on CBS on October 26 at 8:30 p.m. EST. Developed by producers Greg Berlanti, Ali Adler and Andrew Kreisberg, the series stars Melissa Benoist, Calista Flockhart, David Harewood and Chyler Leigh.

RELATED: Calista Flockhart Talks Bringing Cat Grant to Life for "Supergirl"

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, ON THE SERIES PREMIERE OF "SUPERGIRL," MONDAY, OCT. 26

Melissa Benoist, Calista Flockhart, Chyler Leigh, Mehcad Brooks, David Harewood and Jeremy Jordan Star

"Pilot" - 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, on the series premiere of SUPERGIRL, Monday, Oct. 26 (8:30-9:30 PM, ET/PT), on the CBS Television Network. The series moves to its regular time period (8:00-9:00 PM) on Monday, Nov. 2.

SUPERGIRL is an action-adventure drama based on the DC Comics character Kara Zor-El, 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, and learned to conceal the phenomenal powers she shares with her famous cousin in order to keep her identity a secret. Years later, at 24, Kara lives in National City assisting media mogul and fierce taskmaster Cat Grant. She works alongside her friend and IT technician Winn Schott and famous photographer James Olsen, who Grant just hired away from the Daily Planet to serve as her new art director. However, Kara's days of keeping her talents a secret are over when Hank Henshaw, 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.

REGULAR CAST: Melissa Benoist (Kara Danvers/Supergirl); Calista Flockhart (Cat Grant); Chyler Leigh (Alex Danvers); Mehcad Brooks (James Olsen); David Harewood (Hank Henshaw); Jeremy Jordan (Winslow "Winn" Schott)

GUEST CAST: Laura Benanti (Alura); Derek Mio (Hayashi); Ben Begley (Tobey); Faran Tahir (The Commander); Owain Yeoman (Vartox); Dean Cain (Dr. Jeremiah Danvers); Helen Slater (Dr. Eliza Danvers); Malina Weissman (Young Kara); Jordan Mazarati (Young Alex); Rick Garcia (Rick Garcia); Leyna Nguyen (Leyna Nguyen); Robert Gant (Zor-El); Paul Stuart (Yale); Nick Jaine (Another Staffer); Sheila Collins (Passenger); Chriss Anglin (Pilot); Kinna Mcinroe (Waitress); Briana Venskus (Tech Woman); Julien Yuen (Terrified Teen); Zayne Emory (Rick Malverne); Mackenzie Brooke Smith (Female Student #1); Jaidan Jiron (Female Student #2); Tara Macken (Stunt Mother)

WRITTEN BY: Executive Producers Greg Berlanti, Andrew Kreisberg and Ali Adler

DIRECTED BY: Glen Winter