Sofía, an insecure young nanny who starts her new job taking care of two problematic kids. When their parents leave her alone with the children, they become victims of a demonic entity obsessed with playing children's games.
Upper-middle class teen brothers and their newly-met stepsister take a road trip to the Mexico-U.S. border in a tense revenge journey to track down the man responsible for the accident that caused their father's death.