The eccentric Mr. Puff lives next door to Sam in a house full of interesting things. Best of all is the basket of giant dinosaur eggs-until they begin to hatch. The trouble with dinosaurs is that they grow... and grow. Something needs to be done, and fast!

USBORNE圖書館系列到LEVEL5之后，詞匯量增加到1000-1500，每頁的文字數量在十行左右，共48頁，涵蓋了英文大部分的語態和時態。從這個級別開始，由圖畫書逐漸過渡到章節閱讀。適合小學五六年級和初中生作為詞匯量擴展讀本。Level5系列均為世界知名的民間故事和童話故事，學生一般都已接觸過中文版本。