T. S. Spivet is a boy and budding cartographer living on a secluded with his moody older sister, his pretentious entomologist mother, and his emotionally distant and quiet wannabe cowboy father. Lonely and often ignored and belittled by the people around him, T.S. spends most of his time playing, making amateur inventions, and meandering around the ranch with the family dog, Tapioca.