While Ida is busy playing her wonder horn, goblins come in through the window and kidnap her baby sister.
If Ida is to save her, she must follow the goblins into the outside over there and use her wonder music to defeat them...
- Format: Paperback / softback
- Pages: 40 pages, 32
- Publisher: Penguin Random House Children's UK
- Publication Date: 03/01/2002
- Category: Picture books
- ISBN: 9780099432920