Card Captor Sakura

Sakura is just your average girl. Or was, anyway, until the day she got the urge to go into the basement where all of her father's books were kept. One book inperticular caught her eye, the book of The Clow. Hesitatingly, she reached out to grab it, then read the first card she saw. "Windy." With that, all the other cards in the book were blown out, and through the ceiling and all over Tokyo.

After this, a little flying yellow teddy-bear type creature comes out of the book who had apparently been sleeping (aka: Kero). He freaks out when he finds that all the cards were gone and tells Sakura that now she has to go out and capture them, that she has no choice, a "card captor," so to speak...