After Earth is demolished to make way for a new hyperspatial expressway, Arthur Dent begins to hitch-hike through space.

Back on Earth with nothing more to show for his long, strange trip through time and space than a ratty towel and a plastic shopping bag, Arthur Dent is ready to believe that the past eight years were all just a figment of his stressed-out imagination.

The third installment of the zany Hitchhiker series finds Arthur Dent, reluctant space and time traveler, and his wacky entourage on a mission to prevent the destruction of the universe by killer robots. The unhappy inhabitants of planet Krikkit are sick of looking at the night sky above their heads, so they plan to destroy it. The universe, that is. Now only five individuals stand between the white killer robots of Krikkit and their goal of total...

In fifth-century Britain, nine years after the destruction of their home on the island of Shalott brings her to live with her father and brothers in the military encampments of Arthur's army, seventeen-year-old Elaine describes her changing perceptions of war and the people around her as she becomes increasingly involved in the bitter struggle against the invading Saxons.