Forty years ago, Rafael Larraenza risked everything to cross from Mexico to the US. After building a successful career, a twist of fate drew him back to the border. For 25 years, Rafael has tirelessly searched deserts and mountains to rescue lost immigrants and recover remains, becoming a hero in Latin American communities. Despite needing a double hip replacement, Rafael continues his mission, knowing every moment counts for those lost at the border. When Indira, a mother from El Salvador, asks for help finding her son Rodrigo, Rafael risks his life again, driven on by sheer determination, even as the years and terrain take their toll.