Arthur Dent has a very bad day. First, his house is about to be knocked down to make way for a highway. Then, his friend Ford Prefect tells him Earth is about to be destroyed to make way for a hyperspace bypass! Rescued at the last second, Arthur and Ford hitch a ride on a stolen spaceship. Together, they travel the galaxy with a depressed robot, meet the two-headed president of the galaxy, and search for the ultimate answer to life, the universe, and everything.