Having been blown to smithereens on the planet Magrathea, Arthur Dent, Ford Prefect, Trillian and Zaphod Beeblebrox are mystified when they find themselves at the end of the universe.
Accompanied by his girlfriend Trillian and hitchhikers Arthur Dent and Ford Prefect, Zaphod Beeblebrox heads the stolen spaceship Heart of Gold for the legendary planet of Magrathea.
When Arthur and his companions realize that the spacecraft they have stolen is heading towards the sun, certain doubts arise as to the wisdom of their decision.
On board a giant construction platform deep inside the planet Magrathea, Arthur Dent is astonished to learn that his former planet Earth (recently destroyed by the Vogons) was not what it had seemed.
Arthur Dent is furious. His home is about to be demolished to make way for a highway. Staging a sit-down protest in front of the bulldozers, his best friend tells him much worse news - the world will end in 12 minutes.
Rescued from Earth moments before its destruction to make way for a vast hyperspace highway, Arthur Dent and his alien friend, Ford Prefect, find themselves on board the actual demolition spacecraft.