Sophie lives on the border between the United States and Mexico. She spends most of her time taking care of her little sister and working at the family restaurant, hoping to catch the eye of Ruben, the Mexican boy who delivers baked goods. Her father and uncle spend their free time scouring the desert as part of a civilian militia, hoping to stop undocumented immigrants from entering the United States. When Sophie becomes involved with an immigrant-aid organization called Water Is Life, it challenges everything she’s ever known. Suddenly, Sophie is stuck at the borderline of family and justice.