A bratty girl named Mia is given a book, Thumbelina, which upon reading she is shrunk and transported into the world of the book. She embarks on a journey to return home, and to normal size making friends and learning lessons on the way, but that's only the beginning of her adventures.

Instead of dubbing the whole series into English, it was released in North America as an edited 80 minute movie titled Thumbelina: A Magical Story. This version contains many songs that were not present in the Japanese version, including replacing the theme song.

In Japan, only the first half of the series was ever released on VHS. However, the Korean distributor released a DVD box set that contains the original Japanese audio as well as Korean.