For years Grace's family have been wardens of the Griffin map, using its teleport technology to help people and fight crime across the land of Moreland. At thirteen, Grace is too young become a warden, but she longs to go on missions herself. After all, if her brother Bren can do it, why can't she?

So when Grace finds herself alone with the map when a distress call comes in, she jumps at the chance to prove she's up to the task. But the map transports Grace to a remote village where nothing is quite as it seems. Has she landed right in the middle of a treacherous scheme?