Cowboy Smoke (2008)

Joe's a suburban convenience store clerk with big dreams of becoming a cowboy so he packs his boots and relocates to South Texas to learn from the real deal. His idea of the mythic cowboy is quickly shattered however when he finds himself holed up in a town that survives on a human smuggling trade. A few nightmarish twists and turns and Joe's given the opportunity to live out his dream when a family of Mexican immigrants facing certain death need his help.