Zoe and Astra are together again on magical Unicorn Island. And this time they're on an adventure to the Kingdom Under the Sea, where the sea unicorns live, to try and find a precious spell book. They
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 terr
