Two families arrive in Brooks County, Texas to look for their loved ones who went missing after crossing into the country from Mexico. On their search they meet vigilante ranchers, human smugglers, humanitarian activists, and Border Patrol agents, all of whom are locked in a proxy version of the national immigration debate. They also discover a sobering truth: the deadliest part of the journey was far from the border. A gripping investigative documentary, Missing in Brooks County is a portrait of a place that confronts the life-and-death consequences of a broken immigration system.