Walter (Miguel Óscar Menassa) is married to Silvia (Cruz Gonzalez), but realizes that the desire his wife feels for other men leads her to sleep with his friend Gustavo (Luis Miguel Seguí). She decides to confess to her husband the whole truth in front of her lover, but infidelity is not always committed in the same way. A writer who cheats her husband and is cheated at the same time and a mature woman with much to live, are other infidels. Through their comic and emotional stories, a whole treatise on infidelity is elaborated.