This second novel in the Discworld saga is a continuation of the story begun in the first book, The Colour of Magic. Actually, it begins about five minutes after the end of that book, with Rincewind, the incapable wizard falling through space after having tumbled over the edge of the world. But the spell lodged in his head saves him (as well as Twoflower the tourist) in order to save itself, and Rinceworld is launched unwillingly in an effort to save the world. Great A'Tuin, the celestial turtle on the back of which the Discworld glides slowly through the universe, is headed toward a distant, very red star which will probably bring all Disc life to an end. But it has its reasons. As always, Pratchett introduces a number of new and quite delightful characters, especially Cohen the Barbarian, the greatest hero in history -- as evidenced by his very advanced age. With all that, though, I just couldn't get as caught up in this one as in MORT or SMALL GODS. But even a B-minus novel from Pratchett is better than the best many humorists ever produce!