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 warns Esteban that she will not accept that a servant becomes the stepmother of her grandchildren; he assures her that he will always defend Paz. While they sing the song that Paz wrote for her daughter, Luna manages to remember her mother's face. Ginebra manages to convince Esteban to be her ally to find the person who is trying to harm her integrity. Esteban gets upset with Ginebra after she stole a kiss from him, she assures him that he never imagined that he would make fun of a woman's feelings.