Based on the DC Comics character Supergirl, the series follows a costumed superhero, who is the biological cousin of Superman and one of the last surviving Kryptonians, as she uses her powers for the good of humanity.
The show is based on the DC Comics character Supergirl (Kara Zor-El), a costumed superhero who is the biological cousin to Superman and one of the last surviving Kryptonians.