It seems to fidgety Mary that her great-aunt's vacation in the village lasts forever. But the boredom comes to an end when the girl meets a black cat and he leads her into the forest - to the place where a beautiful, but very strange flower grows. The old gardener tells Mary that this flower has been considered magical since time immemorial - it blooms only once every seven years, and the one who finds it is given extraordinary strength and power. With the help of a wonderful flower, Mary flies up over the clouds on a small broom and lands in a fairyland. The girl ends up in a witch school, where she is mistaken for a new student. She begins to learn the art of witchcraft, but soon realizes that something wrong is going on in fairyland...