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.
Esteban confronts Mauro when he learns of the plans he had against Sam. Ginebra makes it clear to Esteban that Paz and her family wanted to keep her daughter Sam and for this reason they caused the accident so that she would forget her past. Esteban finds out that the lawyer he appointed for the case of Paz and her family has given up, so now there is no one to defend them. Paz comes to Sam's defense and assures Ginebra that she is the bad guy for all the harm she did to Sam; Ginebra slaps her.