When Cordelia Hatmaker’s father vanishes on an ingredient expedition, Cordelia refuses to accept that he’s gone. Her grief-stricken aunt and uncle forge ahead to fulfill an order from the king for a magical Peace Hat. But then the Peace Hat is stolen—along with the Peace Boots, Cloak, Watch, and Gloves crafted by the other Maker families. Cordelia realizes that there is a menacing plot against the Makers, and that Prospero Hatmaker’s disappearance may be connected. Cordelia must uncover who is behind the thefts if she is to save the Makers and find out what really happened to her father.