Fifteen-year-old Luis Romero has lived his whole life on the back side of horse racing. Seven days a week, undocumented people like his mother Blanca live and work to feed, groom, exercise, care for, and clean up after the high-strung horses with long pedigrees. It's not just your job - it's your home, your life, your community. Lose the job, and you lose everything. A cheap trainer with a pill habit entices Luis to help her take care of her horses, pulling him deeper into a future on the track... but when Blanca takes up with a security guard with another agenda, it may all fall apart. Luis has to decide, for the sake of his family and his life, what race he really wants to run.