Freddy Fitzroy is able to see fairies. His brother Tom can't see fairies (supposedly). The two of them soon find themselves immersed in a war between the Earth's wizards and the supernatural races. Gradually, they become aware of things like centaurs and vampires in their backyard. They also discover that anyone who gives aid or succor to the supernatural races will be punished by death. They must make a choice whether to side with the human race's self-proclaimed champions or those creatures which are being hunted into extinction.