It's an intro to the game's plot... Not much more. However, the book's plot is just too simplistic, almost too single-threaded, the characters build-up is too cliche... For those who haven't played the game, this might be a good start into the ME franchise. For those who played, I'm sorry, but the game is far better. The only good thing about the book is probably how the story is uncovered through several plot lines, or just character viewpoints, converging sooner or later towards the end of the story. Pity, since the game offered far more "complicated" realm. Or maybe it's just me?