After a series of events which have involved Arthur Dent being alternately blown up and insulted in more bizarre regions of the Galaxy that he has ever dreamt existed, he finds himself stranded on Prehistoric Earth. Luckily an amazing rescue by Ford Prefect and a time eddy, cleverly disguised as a sofa, lands them in the middle of Lords two days before the world is due to end. It's just not cricket. This is volume three in the trilogy of five.