Install behind a vans, a group of Mexican immigrants are preparing to cross the border illegally to taste of the american dream. When the engine of the vehicle with which they carry damaged, passengers are forced to walk through the desert. The Group splits into two: the fastest them sat behind slower ones. Sam, an american psychopath, begins to draw on the group. A veritable carnage. The rest of the group led by Moises wants to review what’s son lives in Oakland, trying to remain unobtrusive but is quickly spotted the Hunter who, with the help of the dog, is launched in its pursuit. Start a terrible prosecution.