Kiki is thirteen years old, right at the age when a young witch in training is supposed to travel to another city and strike out for herself. It's a real test of responsibility and independence, and if Kiki can handle it for a year, she'll be ready to undergo the rest of her education.
So, with only a little money, her pet cat/confidante Jiji, and her mother's broom, Kiki makes her way to a big city by the sea, where witches haven't been seen for years and the demand for them isn't exactly great. Being resourceful, Kiki starts the kind of business most suitable for a witch who can fly on a broom: an airborne package delivery service. As her fledgling business becomes more and more successful, she meets various friends who each teach her about independence, inspiration, and what to do on days when both seem to vanish.