Fairy Unicorns: Cloud Castle Paperback

"Zoe is back on Unicorn Island in time for the Misummer Festival. But as the island grows hotter and hotter, the unicorns realize that Shadow, an evil Fairy Pony, has stolen the clouds. Zoe, and her unicorn friend Astra, must find the clouds before Unicorn Island is destroyed by the burning heat of the sun. But little do they realize a trap has been set for them along the way..."