The DEO prepares an ambush for the Hellgrammite, but it escapes, kidnaps Alex, and takes her to Astra, who uses Alex as a trap for Kara. Kara learns that an alien of the Hellgrammite species who escaped from Fort Rozz, Alura's prison, is on Earth searching for chlorine-based food. In an effort to put a positive image on Supergirl in the wake of a serious mishap, Kara asks Winn and James to help her perfect her skills, while Hank and Alex put Kara through extensive physical training. Teleplay byвЂЉ: Andrew Kreisberg & Ali Adler Story byвЂЉ: Greg Berlanti & Andrew Kreisberg Vartox's superior is revealed to be Astra In-Ze, Alura's identical twin sister, who wants to conquer Earth. James Olsen, another one of Kara's colleagues, reveals that Kal sent him to look after her and presents her with a new cape. Her actions attract the attention of an alien called Vartox, and she is able to defeat him, although he then kills himself. Kara learns that there are hundreds of aliens on Earth, most of whom came from a prison that was run by her mother, Alura. Alex, Kara's adoptive sister, works at the Department of Extranormal Operations (DEO), under the leadership of Hank Henshaw, investigating alien activity. Her cold-hearted boss, Cat Grant, titles the vigilante ' Supergirl'. She tells her co-worker, Winn Schott, about her secret and he starts aiding her.

Twelve years later, Kara, working at CatCo Worldwide Media, reveals her powers as a vigilante. Kal, now operating as the superhero Superman in Metropolis, puts Kara in the care of the Danvers in National City. The planet's implosion forces Kara's ship off course and into the Phantom Zone for 24 years, before landing on Earth. Story byвЂЉ: Greg Berlanti & Ali Adler & Andrew KreisbergД¬ousins Kal-El and Kara Zor-El are sent to Earth before Krypton's impending destruction. See also: List of Supergirl episodes Supergirl, season 1 episodes No.

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