Zoe is staying with her great-aunt when she discovers a magical world full of fairy unicorns - hidden in the oak tree at the bottom of the garden. But Zoe soon finds out that Unicorn Island is in terrible danger. The trees are dying! Can Zoe and her new friend Astra, a beautiful fairy unicorn with silver stars on her coat, find the magical flower that will save the trees - and the island? Fairy Unicorns is an exciting addition to Series Three of Usborne Young Reading, introducing children to original, illustrated fiction with easy reading texts., Series Three is for newly fluent readers who are ready for longer stories.