Pratchett, Terry

With Death off on a tour of mortal pleasures, it is up to Mort, an incompetent wizard, and Death's adopted daughter to set reality back on its course.

Young dwarf Corporal Carrot and Edward, the 37th Lord d'Eath, a new graduate of the School for Assassins, find themselves in the midst of a raucous adventure in Ankh-Morpork, the greatest city in Discworld.

When Discworld's opera house is found to be haunted, a trio of witches is summoned to flush out the unwanted ghost but the results only seem to complicate matters.

When the Professor of Cruel and Unusual Geography disappears from Unseen University with the school librarian, the school puts together a rescue team that travels to the newly built Last Continent, where they encounter a world where evolution seems to be happening too fast and even the normal things are a little strange.

Discworld's ancient rival cities Ankh-Morpork and Al-Khali go to war over an island that rises out of the sea and is claimed by both cities.

Rincewind the Wizzard [sic] is forced to volunteer as a "Great Wizard" for the endangered Empire of Hong, Sung, Fang, Tang, and McSweeney. He and his unusual friends, are given a mission where they must either defend or destroy the forbidden city of Hunghung. Unfortunately the instructions are not very clear.