The year is 1938, and it's a beautiful Indian summer day in the Ozark Mountains. Yarnell Cates, his wife Thelma, and his father are returning home with a wagonload of stove wood when they discover the sheriff's car in their front yard. Sheriff J. D. Hawkins is there to arrest Yarnell on trumped-up charges concocted by the prosecuting attorney and his brother, the circuit judge. The charge is part of an ongoing feud between their families and the Cates.

In a twist of fate, Yarnell is forced to kill the sheriff in self-defense. This act incites the prosecuting attorney to form a posse with orders to burn down the Cates' home, slaughter their livestock, and shoot Yarnell on sight. A bounty of five hundred dollars is placed on Yarnell's head, later increased to fifteen hundred dollars, driving Yarnell and Thelma to seek refuge in a cave in the mountains. Throughout the winter, they endure harsh conditions while evading the men of Sycamore County in a desperate bid for survival.