Summary Supergirl Season 1 introduces Kara Zor-El as she embraces her Kryptonian heritage while navigating life in National City as a young woman with superpowers. The season balances superhero action, family and workplace drama, and themes of identity, responsibility, and social justice. It establishes Kara’s relationships (notably with her adoptive sister Alex Danvers and mentor figures at CatCo and the Department of Extranormal Operations), sets up recurring antagonists, and ties into a wider Arrowverse through cameo crossover elements.