This is basically the same story as told in the previous installment of the series, only from a different perspective. And IMHO it shifts to a kind of young-adult book which is slightly disappointing. The storytelling is good, as usually with Scalzi, and the language is witty. However, it feels pretty bland and almost entirely uninteresting for someone coming from the previous book. The only real info we get is a more in-depth description of the Obin race. It could have been a short-story instead.