The aristocrat Juan de Santa Cruz meets Fortunata, a girl of humble origins, and a passionate love arises between them; but his mother decides to marry him to her niece Jacinta.
The situation at Doña Lupe's house, between her and the Rubin couple, becomes unbearable. Maxi, with lost reason, senses that his wife is expecting a child and says so. Fortunata knows that it is true and has to leave the house. She is going to live with her second aunt at Cava de San Miguel.