This book belongs in a series of other books, prior to this one and is the fifth and final installment. So I suggest reading the previous four books to understand the story and what is happening if you haven't already. This book will have a fair amount of swearing and other mature content. This book and the others are not based off of the actual story of the games, and instead are a different interpretation of the original story, so some things will be different or not exact, considering some of these ideas were based off of debunked theories or misconceptions before established correctly by Scott Cawthon or the newer games. Anyways, enjoy!