Mi segunda madre (English: My second mother) is a Mexican telenovela produced by Juan Osorio for Televisa and broadcast by Canal de las Estrellas in 1989. It starred María Sorté, Enrique Novi and Daniela Castro as protagonists, with Fernando Ciangherotti and Alejandra Maldonado and Cynthia Klitbo as antagonists.

This article does not cite any sources. (June 2019)

Daniela Lorente is an excellent designer, owner of a prestigious fashion house. She is married to Alberto, a bad man who has another wife and two children and steals money from him. One day Daniela discovers Alberto and decides to call the police to lock him up. When denounced by his wife Alberto he is sentenced to 10 years of imprisonment, swearing revenge on Daniela for having handed him over.

On the other hand, Juan Antonio Méndez Davila is an important businessman who has just suffered the death of his wife, leaving him only with a little girl named Mónica. Unfortunately for the little girl, her father has a frivolous and vain lover, Irene Montenegro. Daniela and Juan Antonio, both separately, decide to take a cruise to rest and forget about the problems that afflict them, in this way they meet on board and inevitably fall in love

The fortune to know each other is so great and the two are so happy that they decide to marry but Mónica does not want to accept Daniela as her second mother, even so Daniela loves her husband's daughter and little by little she manages to win the girl, who is Badly advised by Leticia, a schoolmate who envies Monica and pretends to be her friend to put ideas into her head against Daniela. After a time and various treatments, Daniela manages to get pregnant, which revives Monica's jealousy causing her to reject Daniela again. As her pregnancy progresses, the evil Irene pays a criminal named Germán who causes her a car accident. The event has terrible consequences for both Daniela and her son: Daniela is sterile due to the complications of delivery and her baby is premature and dies three weeks later.

Daniela is on the verge of suicide due to the death of her son. Monica seeing Daniela's suffering begins to love her and one day she finally calls her mom. 8 years later, Monica has grown up and is a beautiful woman and is the girlfriend of Lalo, Alberto's oldest son. Juan Antonio continues with great success in business but Daniela has not been able to overcome the death of her baby. In truth, Daniela's suffering is far from over: the past threatens her when Alberto leaves prison ready to take revenge on her for having sentenced him to confinement, for which he seduces Monica to destroy her family.