Erin has always believed in magic, but she never believed she had powers of her own!
Until one day Erin looks up into the clouds and sees a herd of magic horses! Erin discovers that she is a weather weaver with special powers, and the sky horses need her help.
Mistral the young sky foal has been captured by a dark spirit and together with Tor, his father and king of the sky horses, it's up to Erin to rescue him. But a secret fear is holding Erin back from using her special powers - will she find the courage in time to save Mistral?
Unicorns are a big deal. They have their own celebratory day each year (April 9) and they're the national animal of Scotland! Plus, we have tons of wonderful books just as sensational as everyone's favourite mythical horse.