In the parallel universe of Discworld, it's the night before Hogswatch, that special time when the Hogfather delivers presents to the kiddies at the mid-winter festival in the medieval melting pot of Ankh-Morpork. But when the Hogfather is kidnapped by a cadre of villains called the Auditors, the inspiring belief in Hogswatch could be lost forever. So could humanity, unless the Auditors' evil plan is undone ASAP.
