El Juego de las Llaves plot
Mexico City. A group of friends made up of four couples, all in stable relationships, embark on a game of sexual discovery. They decide to exchange partners to free themselves from the daily worries and add some spice to their sexual life. While each of them is like that and has her own secret desires, the game takes on a life of its own and the couples must confront the impact of their decisions and their own perspective on sexuality.