After the usual series of unfortunate events, Rincewind is sent to the Counterweight Continent (which bears a certain similarity to the Oriental cultures) just in time for a "Great Wizzard" to arrive and lead a revolution. In terms of quality, I'd rate this as an average to pretty good in comparison to the rest of the Discworld series, and perhaps the best of the subset of books featuring Rincewind as the main character. It's got a good balance of humor, a fairly straightforward plot, and some deeper implications regarding what constitutes civilization.