When the Earth is destroyed by a Vogon Demolition Fleet to make way for a new hyperspace bypass, Arthur Dent joins his friend Ford Prefect (who turns out to be a researcher for an electronic reference guide called the Hitchhiker's Guide to the Galaxy) for a galactic voyage on which they meet Zaphod Beeblebrox, a two-headed ex-president of the galaxy, and his human companion, Trillian. Their journey takes them from the remains of Earth to Milliways, the restaurant at the end of the universe.