Christopher Boone is a 15-year old autistic savant in Swindon, England. He hates being touched, cannot tell a lie, or understand metaphors or jokes. He is a whiz at math and enjoys puzzles. When the neighbor&s dog is killed with a pitchfork, he seizes upon it as a puzzle and math problem in hopes of understanding something that makes no sense to him. This begins a journey for Christopher that takes him places he never imagined, both physically and emotionally.