Liz is struggling to adjust to her new life as a mother. With her husband in a different country for work, Liz has left her job to stay at home and care for their baby, Nicanor. Feeling lost and alone, Liz begins taking Nicanor to the neighborhood park, where she strikes up a friendship with the blunt, spontaneous Rosa. From a dine-and-dash adventure to sharing fears about motherhood, Liz feels an immediate, liberating bond with Rosa. That freedom soon turns into paranoia, however, as Liz begins to suspect Rosa's true intentions when she is sucked into Rosa's world of stolen cars, unstable sisters and shady pasts.