The Light Fantastic

The Discworld is very much like our own - if our own were to consist of a flat planet balanced on the back of four elephants which stand on the back of a giant turtle, that is.
'What shall we do?' said Twoflower.
'Panic?' said Rincewind hopefully. He always held that panic was the best means of survival.
As it moves towards a seemingly inevitable collision with a malevolent red star, the Discworld could do with a hero.
What it doesn't need is a singularly inept and cowardly wizard, still recovering from the trauma of falling off the edge of the world, or a well-meaning tourist and his luggage which has a mind (and legs) of its own.
Which is a shame, because that's all there is…
The Discworld novels can be read in any order but The Light Fantastic is the second book in the Wizards series.