The Hitchhiker's Guide to the Galaxy, written by Douglas Adams, is a comedic science fiction series that follows the misadventures of Arthur Dent, an ordinary human who is swept off Earth just before its destruction to make way for a hyperspace bypass. Arthur finds himself traveling through space with an eclectic group of companions, including an alien researcher and a depressed robot. The series is known for its witty humor, satirical commentary on society, and its exploration of philosophical themes in a lighthearted manner.