WATCH: Inside The CW's CRISIS ON EARTH-X - SUPERGIRL

The CW Network has shared an inside look from the SUPERGIRL episode of the crossover event CRISIS ON EARTH-X. The TV event features crossover episodes of THE FLASH, SUPERGIRL, LEGENDS OF TOMORROW and ARROW. Stream all 4 crossover episodes from Crisis on Earth-X for FREE only on The CW App!

Look below for Inside: CRISIS ON EARTH-X - SUPERGIRL:

SUPERGIRL is based on the DC character Kara Zor-El, Superman's 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. Kara lives in National City assisting media mogul Cat Grant. However, Kara's days of keeping her talents a secret are over when Hank Henshaw, head of a super-secret agency, enlists her to help protect the citizens of National City from sinister threats.