Kiki is a witch who just became 13 years old, and an old tradition among witches is to leave for another city (where no other witches lives). This because they should learn how to become self confident, they have to be way for 1 year. So together with her black cat Jiji, Kiki leaves to find the ultimate city (a large city by the sea). And they start a delivering service in the town in which they settle.