In Eagle Pass, Texas, where the U.S. and Mexico meet along the Rio Grande, a cattleman and the mayor face the dawn of a new reality. In the matter of a few turbulent months, the specter of cartel violence begins to loom from upriver, leading to an indefinite border closure and its rippling consequences on the home front. Martín Wall's livelihood depends on bringing cattle across the border to market, and his frustrations grow by the day as he reflects on supporting his young daughter. Meanwhile, Eagle Pass Mayor Chad Foster, a proud champion of the region, strives to convince the people (and perhaps himself) that the communities along the border can remain close and harmonious. Amongst these struggles, a rich and vivid portrait of this corner of America emerges: an aspiring rodeo hero, a spirited bullfight, the vigilance of a retired Border Patrolman at the Rio, and the kind of frequent and vigorous celebration that's inextricable from life on the frontier as the world changes.