Best friends Lewis and Rhona are caught up a dangerous adventure to save the world's last herd of wild unicorns. Fighting against dark forces, battling the wild landscape, and harnessing ancient magic, can they rescue the legendary creatures in time?

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?