After a young woman and a bull are found dead in a dark pasture, Blanco County game warden John Marlin is asked to assist with the investigation. Was it a case of rustling gone wrong? Or maybe a prank turned deadly? Marlin hopes the woman's boyfriend can shed some light on the situation, but he's nowhere to be found. Is he on the run or did the woman's violent brother take matters into his own hands? Marlin and a special investigator - an old flame from his college days - join forces to see past the bull and discover the truth.