El Noveno Mandamiento is a Mexican soap opera produced by Lucero Suárez in 2001. As of June 24th, 2013, Unimas is broadcasting 2 hour episodes of this soap opera.

Mexican telenovela remake of the Brazilian soap opera "Todo o nada". Patricia is a sensitive and intelligent woman who begins to work in the firm of Ambrosio and César Augusto (father and son). They both fall in love with her, but César Augusto breaks off his relationship with his girlfriend, Valeria and marries her. Patricia and César Augusto will separate, however, they will meet again later having totally different lives: she is a working woman and he is married to another woman.

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.