Buck and the Preacher

Set in the late 1860s in the Kansas Territory shortly after the American Civil War, a former soldier named Buck leads wagon trains of African Americans from Louisiana west to the unsettled territories of Kansas. In order to ensure safe passage and food for his company, Buck negotiates with the Native Americans in the area. He pays them, and in turn they allow him to kill limited numbers of buffalo to eat, and to pass through their land providing they do it quickly.