Everyone has experienced a bad morning. Arthur Dent (Martin Freeman) has a bad morning. He slept in bed too late, hurt his toes when he got up, hit his head when he went downstairs, and burned the bread for breakfast. The government has decided to demolish his house, and his friend Ford Prefect (Mos Def) admits that he is an alien and is looking for a new version of "The Hitchhiker's Guide to the Galaxy" on Earth. The most sensational thing is that aliens are building a galactic highway, and the earth is an obstacle to the progress of the project. The aliens are about to destroy the earth. With the help of Ford, Arthur Dent took a spaceship of an alien passing by the earth at the last moment before the earth was destroyed, away from this sad place that was about to be destroyed, and began a galaxy adventure full of surprises. During the space journey, Arthur discovered that towels were the most useful thing in the universe, and realized the exact meaning of life. He also found that everything he needed to know was actually written in an e-book called "The Hitchhiker's Guide to the Galaxy"...