Paz Roble, a kind, hard-working and honest woman from whom her husband, Fermín, takes her newborn daughter. Fermín has a large debt with some lenders and to pay it he decides to sell his daughter to Mauro Nicoliti. This plagiarism is orchestrated by Geneva, Mauro's adoptive sister. She lost her first-born daughter in childbirth and does everything to replace her dead daughter and keep her husband's fortune. On the other hand, Esteban Villa de Cortés loses his wife and becomes a widower with his three children. Elvira Moncada, Esteban's mother-in-law, holds him responsible for the death of her daughter. After a series of unexpected events, Esteban and Paz meet in the neighborhood where she lives with her family. The chemistry and great understanding that exists between them makes it inevitable that they will fall in love.
Elvira bursts into tears when she reveals that before Berenice, she had a daughter about whom she knows nothing; Geneva calls Elvira the worst mother in the world. Ginebra confesses to Mauro that Esteban worried about her, he begs him not to ruin her plans. Fermín demands that Rubio no longer approach Paz Roble, Ginebra is surprised to hear her name and questions him if that woman is the mother of her daughter.