It is thirteen years since the Great Plague wiped out half the population of England.Matty Cutler has visions that plague will return and foresees the deaths of many children.He has a 3 year old daughter he wants to protect.Matty arrives at Oxford University to study medicine, learn more about the plague and so be better placed to keep his child safe. Instead he makes an enemy of one of the most powerful men at Oxford.In a desperate attempt to protect his daughter and other children Matty creates a sanctuary in Windsor Great Forest.But he and his group are facing two kinds of evil; and the human kind is every bit as dangerous as the natural kind.