Pony Island is in danger. The fairy ponies are losing their magic and the Pony Queen's powers are under threat. Can Holly and Puck uncover the mystery of the missing magic before it's too late? The Usborne Reading Programme is a collection of over 250 reading books, graded in seven levels. Developed with reading experts, this series now features original fiction to provide readers with even more choice. Series Three books are for fully confident readers who still need to gain the stamina needed for standard length books. They use advanced sentence structure and vocabulary and have more complex plots with subplots.