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.
After her father passed away her stepmother who never loved her (Isaura) treated her cruelly. In spite of that Lucia met Fernando who made her discover what true love is.
Mariana is a poor young woman who is left alone in the world and must make her way in life. When she saves the life of Alberto Salvatierra, in gratitude he takes her to his house where she meets Luis Alberto Salvatierra and they fall deeply in love. To carry on their relationship, Mariana will have to overcome obstacles of social class, education and traumas, while being surrounded by ambitions and betrayals. When Mariana and Luis Alberto are able to realize their love, life will bring them a tragedy: the loss of their son.