Death has a problem - the world is due to end next wednesday. Tradition demands that the 4 horsemen of the apocalypse ride out, but War has married a valkryie and is encouraging an ant world war in is spare time, famine and pestilence have also got other things to worry about, so it looks like Death's on his own. And then there's the 5th horseman, the one who left due to "artistic differences" before they got famous... And he gets tied up in the end of time, as he happens to be right in Ankh Morpork when time stops. And then there's the history monk and his apprentice. Lu Tse has been round the block a bit and knows the tricks that time can play, his apprentice appears to be a natural at it. They're searching for the perfect clock, the one that will stop time, and they almost get there in time, but Lobsang Ludd doesn't make the cold blooded decision, and the clock strikes, just the once. Time (the characterisation)0 is a creation of humans, and time had a child. In fact, time had twins. The offspring of time is able to operate separate from time, as are the other deities and anthropomorphic personifications in the discworld - and there's a fair few of them running round Ankh at this particular time! Also present are the auditors of reality, and they're at the root of the trouble (as usual). But this time they get more than they bargined for, and discover that there are perils in becomming human, including learning the real meaning of death by chocolate!