Fifteen-year-old Mo Merrydrew isn't exactly expecting to be asked to be Vampire Queen of Great Britain when she's cycling home from school one wet Tuesday evening. Apparently, she is 'the Chosen One'. Aside from being uncomfortable with the idea of unelected power (not very democratic), there's the blood drinking to consider (Mo is a vegetarian), and frankly it's just not really the sort of role Mo's looking for (she wants to aim for a real job in politics). But - if you're Vampire Queen, you probably don't have to do PE any more, and when the dreamy Luca, a vampire familiar, turns up, it all suddenly starts to look a bit more appealing ...