You are reading version Bravo of a two version story. If you read version Alpha, things will seem familiar in the beginning of this book, because the two versions share a lot of text for the first few chapters as the story is set up. Then things change and the plot plays out in an entirely different fashion. There are subtle differences between the early chapters of the two books, which support the different directions in which things go, so it is recommended that you read everything carefully, even if it seems familiar. Beginning with the end of chapter four, it won't be familiar any more.