A little orange cat with a big attitude shows up on the scene, and Lena makes a discovery that may change her friendship with Linda forever.

Arch-frenemies, scheming faculty, an intergalactic orange kitty and a flying horse are just a few things that come her way. Supergirl is so busy as a hero--will she even make it to graduation? Join her on this all-ages adventure! Meet Linda Lee! She's the newest kid on the block--and the planet, too! Find out how an ordinary girl from Krypton became the most extraordinary girl on Earth. And if you think life is tough as a hero, try being in the eighth...