Arthur Dent, Ford Prefect, Zaphod Beeblebrox, Trillian and Marvin the manic depressive android have escaped from the planet Megraetha. We find out that Zaphod is working with someone to find the real ruler of the universe. Soon they are attacked by Vogons. The Vogons we find out were hired by the association of psychiatrists because they wanted Earth destroyed so the answer to the question of Life, The Universe and Everything could never be answered. Now they want to make sure the answer is never revealed by killing the last two Earthlings. Well through a whole bunch of improbable events they find themselves at Milliway’s the Restaurant at the End of the Universe. This restaurant is far in the future and caters to the rich and famous so they can watch the universe die while eating dinner.
After the show they steal a ship belonging to rock band Disaster Area. Only this ship is programed to crash into a sun as their act. They manage to get the escape transported working and Arthur and Ford wind up on a strange spaceship. It has thousands of people in cryogenic suspension. They find out that these people were the worthless people of Golgafrinchia. People like telephone sanitizers and ad executives. They are programed to crash into a planet which they do. Soon Arthur and Ford find themselves on Earth 2 million years in the past. Here they find out the most important question of Life, The Universe and Everything.
The second in the trilogy which later was expanded to five books is another brilliant work of satire. Arthur Dent and whole whacky crew have adventures. We get to find out the question to the answer 42 and it makes perfect sense. This is another story of the futility of trying to answer the question why we exist. The BBC series also adapted this book and it was a really cool series.