"The Horseman on the Roof" is a historical novel by Jean Giono, set in 1832 during a cholera outbreak in France. The story follows Angelo Pardi, an Italian nobleman who flees to the countryside to escape political turmoil and finds himself navigating a landscape ravaged by disease. As Angelo travels through the region, he encounters various characters and challenges, highlighting themes of survival, love, and the human spirit. The novel combines adventure with a deep exploration of the impact of illness on society, showcasing Giono's lyrical writing style and vivid descriptions of the natural world.