All Otaha Higuchi wants to do is work with books. However, the exhausting nature of her work at a chain bookstore, combined with her paltry salary and irritating manager bring reality crashing down around her. She is on the verge of quitting when she receives a message from somebody inviting her to apply for a job at a place referred to simply as "The Night Library." As well as a treasure trove of books, the library houses a group of literary misfits. But when the library's mysterious owner decides to temporarily close the library, Otaha and her friends fear that it may not reopen. Is their friendship and their faith in the value of books strong enough to save it?
