Source plot synopsis — includes the ending
Knowing that the Hogfather is also responsible for the sun rising, Death attempts to maintain belief by dressing up as the Hogfather and fulfilling his role, aided by his servant Albert. Due to Death's simplistic understanding of the meaning of Hogswatch, he commits several acts supposedly to aid restoring belief in the Hogfather but which Albert believes are unacceptable, including granting more life to a deceased matchgirl and stealing food from a luxury restaurant to give to the Canting Crew (whilst replacing said restaurant's stock with mud and old boots). Since he is unable himself to defeat Mr. Teatime, who is in a realm created by children's belief where death (and thus Death) does not exist, he appears at his granddaughter's place of work dressed as the Hogfather. As he had planned, Susan Sto Helit is unable to resist her curiosity and tries to find the Hogfather. She visits the Hogfather's Castle of Bones, only to find the hung-over Bilious, the "Oh God" of Hangovers. In an attempt to cure Bilious from his hangovers, Susan visits the Unseen University, where it is discovered that several small gods and beings (including Bilious, a Verruca Gnome, a Hair Loss Fairy, an Eater of Pencils, an Eater of Socks, Towel Wasps, and a Cheerful Fairy) are being created due to an abundance of excess belief in the world caused by the Hogfather's disappearance.
Susan and Bilious travel to the Tooth Fairy's realm and discover Mr. Teatime's plot. Mr. Teatime attacks Susan using Death's sword, but since it does not work in this realm, Susan is able to overpower him and throw him down the tower, causing him to disappear. After Susan witnesses the Tooth Fairy (in fact, the original Bogey Man, who became the Tooth Fairy to protect children) die from the exhaustion from defending its kingdom, she tasks the childlike Banjo Lilywhite, the last surviving gangster, to carry on the task of protecting the teeth. She then manages to rescue the Hogfather, who has reverted to his former self as a hog, from Auditors who hound him in the form of attack dogs. As Susan is returning to her place of work, Death explains what happened to Susan but she is attacked by Teatime whom she finally manages to kill using the kitchen poker.
Sources and content license
Source and revision history ↗ · Adapted from Wikipedia contributors, Hogfather. Section headings and formatting adjusted. · Content license