The Kite Runner is the story of a young boy, Amir, struggling to establish a closer rapport with his father and coping with memories of a haunting childhood event. The novel is set in Afghanistan, from the fall of the monarchy until the collapse of the Taliban regime, and in the San Francisco Bay Area, specifically in Fremont, California. Its many themes include ethnic tensions between the Hazara and the Pashtun in Afghanistan, and the immigrant experiences of Amir and his father in the United States. The novel was the number three best seller for 2005 in the United States, according to Nielsen BookScan. The Kite Runner was also produced as an audiobook read by the author. The Kite Runner has been adapted into a film of the same name released in December, 2007. Hosseini made a cameo appearance towards the end of the movie as a bystander when Amir buys a kite which he later flies with Sohrab.