夜深了，安靜的圖書館里突然冒出了一批夜間活動的小動物，而圖書館的小管理員也在三只貓頭鷹的幫助下為每個動物找到完美的書，但隨著嘈雜的松鼠樂隊，狼和烏龜的加入，他們可能要忙活一晚上了……

書中的扉頁插圖運用深藍色和土黃色來表現內容的靜態和動態，完美的詮釋了一個童話般的午夜故事。
When we are fast asleep in bed, the Midnight Library opens its doors to all the night-time animals. Inside the library the little librarian and her three assistant owls help each and every animal to find the perfect book. But with a noisy squirrel band, an upset wolf and a slow-reading tortoise to help, they could all be in for a very busy night ...A beautiful, big-hearted book about the joy of reading.