Quick recap
After years alone on prehistoric Earth, Arthur reunites with Ford, and the two ride a sofa through space-time to Lord's Cricket Ground, shortly before Earth is destroyed. White robots steal the Ashes, and Slartibartfast asks for help: the people of Krikkit, a planet hidden inside a dust cloud, once tried to wipe out the universe and were locked away outside time, and the robots are collecting the pieces of the key. Along the way, Arthur learns to fly and escapes Agrajag, a creature he has accidentally killed over several lifetimes. Trillian works out that Krikkit was manipulated by Hactar, a supercomputer. At Lord's, Arthur stops the final bomb.

