Kiki is 13 years old this year. According to the rules of the magic world, a magic girl must go out for a year of practice when she turns 13. So Kiki embarked on a journey of practice with her pet black cat Jiji. However, the journey of practice did not start smoothly. When Kiki came to a big city by the sea, people did not welcome her arrival and no one paid attention to her. Fortunately, Kiki has a kind heart. When she picked up someone else's lost property, the enthusiastic Kiki found the owner. Her kindness won the favor of the bakery owner, and Kiki started her express delivery business in the bakery to serve customers with flying magic. Kiki quickly adapted to the new environment. Once, a boy who was keen on aircraft manufacturing invited Kiki to attend a gathering of the flying club. On the way, Kiki was caught in the rain because she helped an old lady deliver something. From then on, Kiki suddenly found that her magic was getting weaker day by day.