You are an average 14 year old girl in Mitakihara City. As you walk back home from a particularly boring day in class, you suddenly notice that something was following you home... As you turn around, you see a small cat-like creature with white fur and four ears.

Kyubey: Greetings, young girl. This may come out of nowhere and all, however, would you like to sign a contract with me? In exchange for granting you any wish you want, you become a Magical Girl and fight Witches. Do we have a deal?