According to Edward Abbey, the book is a fictionalized autobiography of a 17-day journey that Pirsig made on a motorcycle from Minnesota to Northern California along with his son Chris. The story of this journey is recounted in a first-person narrative, although the author is not identified. Father and son are also accompanied, for the first nine days of the trip, by close friends John and Sylvia Sutherland, with whom they part ways in Montana. The trip is punctuated by numerous philosophical discussions, referred to as Chautauquas by the author, on topics including epistemology, the history of philosophy, and the philosophy of science.