Twilight is a rather ordinary little grey pony but when Lauren whispers the magic words, he turns into a beautiful snow-white unicorn.
In this thirteenth exciting adventure Lauren and Twilight make an intrepid journey to the land of Arcardia in order to save their pony friend Shadow from a mystery virus.
- Format: Paperback
- Pages: 160 pages, integrated line drawings
- Publisher: Penguin Books Ltd
- Publication Date: 01/03/2007
- Category: Animal stories
- ISBN: 9780141321219