When a freak accident kills their mother, Libertad and his little brother Julio are no longer safe living on their own near the Guatemala City Dump. Libertad knows that surviving by their wits alone won't be enough to send his brother to school or give them any hope for the future. There is only one thing to do. Earning their way as street musicians, they will set out on the long and dangerous journey to the Rio Grand River, where they will somehow find a way to cross into the United States and find their father.