 Based on a book by Astrid Lindgren, author of "Pippi Longstocking".  Lindgren wrote the book after she saw a lonely boy sitting on a park  bench in Stockholm. She wondered what he was doing there, who he was  and where he would end up. That gave birth to the story of Prince  Mio. The bench which the boy sat on can still be found in Stockholm  today, marked with a sign saying that "Mio sat here".