This is the last full length Rincewind novel in the Discworld series. There are two main plot threads, one being Rincewind stranded in XXXX, a continent parodying Australia which has yet to settle in as it was added by the gods after the others were already there. The other features the faculty of the Unseen University trying to locate Rincewind hoping that he can help cure the librarian of his illness that causes him to change shape (Rincewind is the only person who knows the librarians name). The wizards end up stranded on a deserted island thousands of years in the past inhabited by strange and unique animals and plants created by the god of evolution.
The book feels like two novellas stitched together, they join together at the end but it involves a lot of coincidences. I enjoyed all the absurd jokes in both though, it’s a bit of a throwback to the original two books in the series.