Siye inherited an old bookstore left by his grandmother that was only open at midnight. He discovered that there were books hidden deep in the bookshelves that should not exist. Each book was related to the secrets of a living person or the omen of sin. When a borrower encounters misfortune for no apparent reason, Si Ye realizes that his job is not only to keep the book, but also to maintain the dangerous boundary between the book and people, perhaps at the cost of facing the oldest fear in the book.
