Sin pecado concebido

A heartbreaking story in which power, obsession, and desire will tragically mark the love between Paulina and Adrián who will fight for their love against all odds, even if it takes their life.

Mariana lives with her father, Atílio, and is motherless. He is a very powerful man, and he keeps a big secret: Mariana is not his biological daughter, Atílio has two sisters: Isabel, the oldest, a good and caring woman, who raised Mariana and loves her as if she were her own daughter; Márcia, the youngest, arrogant and very vain, has a cold heart, has never fallen in love with anyone and always mistreated Mariana, until a boy called Inácio Lugo Navarro arrives in the city, very attractive, who uses a false name and is looking for his roots and revenge.

María Alejandra Rivas Cavalier, a young aspiring surgeon with a prestigious family name, joins the highly regarded internship program at Santa María University Hospital. There, alongside a group of new friends and her relationship with renowned surgeon Andrés Guerra, she faces medical and personal challenges that shape her journey. Amid intriguing medical cases and the quest for her own path, the hospital becomes her new home and the stage where friendship, love, and sacrifice intertwine.

When Refugio and her three sons—Patricio, Edmundo, and Ignacio—are forced out of their home, a twist of fate brings them to Mexico City, where they begin a new life. Eighteen years later, they are settled in a small apartment in a working-class neighborhood. Refugio holds a modest job; although she suffers from serious vision problems, she neglects her own health to attend to her sons' needs. Patricio is studying law and dreams of a comfortable, prosperous future; his mother admires him for his charitable nature. Meanwhile, Edmundo begins courting Lucero—unintentionally hurting Ignacio, who secretly loved her—while Refugio tries in vain to make Patricio understand that he will never be happy with Olga.

Fernanda is the youngest daughter of the landowner Gonzalo Elizalde, owner of a large dairy company, and Eduardo is the son of Soledad, the Elizalde family's housekeeper. The two children have grown up together, united by an innocent and pure love, despite the difference in social class.

The story follows Isabel—known as "Chispita"—who was separated from her mother after the latter lost her memory in an accident. After growing up in an orphanage, Isabel is adopted by a widowed businessman, Don Alejandro; he hopes she will bring joy to the life of his daughter, Lili, who has become sad and ill-tempered since her mother's death—largely due to the influence of her teacher, the wicked Miss Irene. However, contrary to Alejandro's expectations, Isabel is not welcomed by his daughter; instead, she must contend with the malicious traps set for her by Lili and Miss Irene. Yet, Isabel also finds friends in the household, such as Juan Carlos (Lili’s older brother) and Gloria (the family’s maid). From her new home, Chispita begins the search for her mother.

On Gabriel's birthday, he and his friend Jorge Mario are kidnapped by guerrillas who have infiltrated his rice farm. Isolated in the middle of nowhere and with no news of his desperate family, Gabriel must survive however he can and becomes the stylist for the commanders and soldiers. Gabriel insinuates himself into the circles of power to eavesdrop on the commanders' conversations, gathering critical information and trying to find a way to contact his brother in the military so he can regain his freedom.

Lucas falls for a young Arab girl named Jade. She is caught between modern values and her Islamic upbringing. They separate and two decades pass. Then a strange turn of luck brings the pair together. Then Jade meets a clone, who is just like Lucas, but twenty years younger. She must choose between the man she loved and the memory she cherishes.

After her parents death, the little Cecilia is under the care of her aunts: Natalia and Evangelina. Evangelina is a cruel woman who doesn't love the child and she treats her bad. Unlike Evangelina, Natalia is good and will help Cecilia because she is her real mother. She was seduced and got pregnant by Padre Julio. Evangelina hates Padre Julio because in the past he preferred Natalia to her. Many years later, there is a problem, because Evangelina doesn't want to give Cecilia money to attend the University. But Cecilia wins a grant and she can study now. She is engaged and wants to marry Giovanni, but Evangelina is against. She will poison him with a drink. Then Cecilia meets and falls in love with Gerardo, who is engaged to Sofia. Sofia's parents are Marta and Armando. Armando returns home after abandoning his family for many years. Marta has a romance with Manuel, but Sofia and Armando are opposed. Ines and Renato, who are Gerardo's parents, also are opposed to his romance with Cecilia. She breaks up the romance and goes to sor Angelina's nunnery to become a nun. Sonia and Roberto try to separate Gerardo from Cecilia. Then Cecilia finds out the truth about her birth and meets padre Julio. Natalia discovers that Evangelina tries to appropriate the whole patrimony of Cecilia and Evangelina kills her.

Ana Paula agrees to move far away to the Del Fuerte hacienda to work as a nurse for the fearsome Rogelio Montero—left paralyzed by an accident—who keeps everyone under his thumb at this estate filled with secrets.

Martín (Iván Sánchez) hurries to Mina Escondida after getting an urgent letter from his brother begging to be rescued from the hell in which he's living. On arrival, Martin despairs upon finding out that Demetrio (Pablo Montero), his brother, has committed suicide. His sorrow is transformed into hatred and a thirst for vengeance against the woman who caused his brother suffering and brought him to death.

Victoria Balvanera owns a vast expanse of land and a prestigious advertising agency. She is married to the landowner Nelson Brizz. Following an attempted kidnapping, she finds love with José Ángel—her rescuer and the estate's new foreman.