The Color of Magic

Based on the first two books in Pratchett's Discworld fantasy series. Discworld is supported on the backs of four elephants that stand on the back of the Great A'Tuin (a giant turtle) that floats through space. Only the turtle has suddenly decided to move towards a fiery red star that will cause Discworld's destruction. In order to save the day, naive tourist Twoflower (Astin) and incompetent wizard Rinceweed (Jason) must collect eight spells that are all part of an elaborate game.