4 Copas (2009)

Diana is a young woman about to enter adulthood. She lives with her father, Gabriel, a game machine dealer, and Magdalene, the stepmother, alongside those working in a hair salon in a shopping center. One day, Diana discovers that Magdalene not only keeps a secret relationship with Michael, the security center and instructor in the gym of the neighborhood, as resumed his old habit of playing. Not to allow the stepmother to his father do the same as her mother had done to her, Diana decides to intervene, approaching the Magdalene lover.