Headstrong Thomas Dunson starts a thriving Texas cattle ranch together with the assistance of his loyal route hand, Groot, Matthew Garth, and his protégé, an undercover Dunson took under his wing when Matt was a boy. Looking for money following Civil War, both Dunson and Matt lead a cattle drive to Missouri, where they are going to get a greater price than locally, however the crotchety older individual and his partner begin to butt heads.