On a world supported on the back of a giant turtle (sex unknown), a gleeful, explosive, wickedly eccentric expedition sets out. There's an avaricious but inept wizard, a naive tourist whose luggage moves on hundreds of dear little legs, dragons who only exist if you believe in them, and of course the edge of the planet...

It's the holiday of Hogswatch in the parallel universe of Discworld, the night when kids anticipate presents from the beloved Hogfather. But someone--or something-- wants the Hogfather out of the way. Now it's up to the most unlikely of heroes to get the holiday back on track before humanity loses all hope.