A harrowing view of the chaos, absurdity, and senseless deaths along the U.S.-Mexico border through private citizens who are taking the law into their own hands. The region, celebrated for its history of lawlessness, has become the most highly trafficked areas for immigrants in the world—and one of the most dangerous. A shift in border policy forces migrants to cross the unforgiving desert where thousands die; those who make it face volatile civilian militias. Following rancher vigilantes with semiautomatic weapons, outlaw pastors with four-wheel drives, and impoverished immigrants with dreams of a better life, the film explores the uncertain line between what is patriotic, what is moral, and what is just.