Apparently, in a small town in Ireland, zombies attacked, condemning some to walk as the undead, and devouring the brains of others while they still lived.
But, B isn't necessarily convinced. Scared? Probably. In denial? Most likely. But, things at school will be the same (not worth much time), and things at home will be the same (a good thrashing for the smallest "supposed" infraction).
So B keeps going on with life; terrorizing the younger classmates, joining Dad for some political meetings, and sleeping through lectures. But, B can't help but realize that there might be more truth than lies about the zombie thing, and that Dad's rantings might be more dangerous than B thought.
As the title suggests, this book has some good, old-fashioned, bloody, gut-flying, scream-inducing zombie action. But, the build up to that point actually gets the majority of this first Zom-B installment.
Instead of focusing on the zombies, Shan focuses on what B realizes about hate, racism, bullying, and the monstrous side that has to be kept in check in all of us.
If blood and guts aren't your thing, than this probably isn't the book for you. But, Shan does a nice job of giving a fast-paced and exciting story that still has something to say.