 Astra leads them with the intention of saving Earth from humanity, but for years they are hunted by the American government's DEO, while Kara Zor-El, known as Kara Danvers on Earth, grows up.Once Kara takes on the mantle of Supergirl, she aids her adoptive sister Alex Danvers, DEO agent, in hunting the Phantom Zone escapees.Non pressures Astra to proceed with her plan to "save" the Earth, despite her knowing that she must kill her niece Kara to succeed.