The Night Library on the outskirts of Tokyo isn't your ordinary library. It's only open from seven o'clock to midnight. It exclusively stores books by deceased authors, and none of them can be checked out -- instead, they're put on public display to be revered and celebrated by the library's visitors, akin to a book museum. Otoha Higuchi, the newest employee, has been recruited to work at the library by the mysterious anonymous owner. There, Otoha meets the other staff, comprised of former librarians and booksellers who, like her, have been damaged in some way by the rocky publishing industry - yet none of them have ever given up on their dedication to books. Night after night, Otoha bonds with her colleagues over meals in the library café, each of which are inspired by the literature on the shelves. When strange occurrences start happening around the library that may bring the threat of closure, it forces Otoha and the library staff to rethink their entire relationship with work and what they really want in life.