"For many years, Superman thought he was the lone survivor of his lost planet. That all changed the day a spacecraft crashed on Earth - and a young girl emerged from the wreckage: Kara Zor-El. A supergirl from Krypton. Collected in this super-sized volume of stories are super-boyfriends, super-babies and super-villains! Can the Girl of Steel defeat the greatest challenges presented by Mr. Mxyzptlk, Lex Luthor and the Phantom Zone prisoners? She won't have to do it alone - as her cousin Superman, Streaky the Super-Cat and Comet the Super-Horse all courageously help her protect humanity!"--Publisher's description.