In central Montana, the Highwood Cattle Roundup has been happening exactly this same way since 1912. As the world changes and modernizes, this proud iconic American culture struggles to preserve its way of life. Through the perspective of an aging father, his two sons, and their extended family of Montana cowboys, Only Roundup Remains provides a rare and intimate glimpse into the disappearing lifestyle of proud generational ranching families, their tradition, hard work, honor, and what might be their final roundup.