This book wasn't really that exciting. Most of the book, the two protagonists are trying to find their friend, who was apparently kidnapped. That was the reason that kept me reading, to see what would happen. 
 Hunter is a 17-year-old boy who takes part in "cool tastings", basically meetings to decide if a product is cool or not. He meets a girl, Jen, who is an Innovator. There's a whole cool pyramid, with Innovators, those who do something the very first time (like inventors), trendsetters (like Hunter), who sit below the Innovators, and a few more below that. Hunter's boss, Mandy, goes missing, and her phone is found inside an abandoned building right where she was supposed to meet Hunter and Jen. They go around, searching for clues, go to a formal "hoi aristoi" launch party for a famous magazine, all to find out where Mandy went. 
 Westerfeld used many metaphors that were very mind boggling. I didn't understand the ending at all. This book takes weird to a whole new level. I usually like Westerfeld's work, but this was definitely not a favorite.