The Earth follows shortly after to make way for a new hyperspace express route, and Arthur's best friend has just announced that he's an alien.

After that, things get much, much worse.

With just a towel, a small yellow fish, and a book, Arthur has to navigate through a very hostile universe in the company of a gang of unreliable aliens. Luckily the fish is quite good at languages. And the book is The Hitchhiker's Guide to the Galaxy, which helpfully has the words DON'T PANIC inscribed in large, friendly letters on its cover.