The spaceship, The Heart of Gold, is under attack. Zaphod Beeblebrox calls for the aid of his dead grandfather, who saves the ship and sends Zaphod on a mission to find a mysterious man who allegedly controls the universe. Zaphod is soon kidnapped, and taken to Frogstar World B, where he is subjected to the Total Perspective Vortex.
Breakdowns by Shepherd Hendrix, and finishes by Steve Leialoha.
Page count is significant to the plot of the book.