Guardians of the Wild Unicorns (Broché)

I know it's a crazy plan, and you don't need to come with me. But i'm going to find the unicorns, and when I find them, I'm going to set them free. In the wild Scottish Highlands, best friends Lewis and Rhona discover that the legends are true : unicorns are real creatures, darkly magical and in deadly danger. A black-hearted gamekeeper has captured the world's last herd of these incredible creatures.
Can the friends rescue the wild unicorns before an ancient promise has unimagined consequences for them all ?