Cadenas de amargura

Cecilia (Daniela Castro) is a beautiful young girl, who, upon the death of her parents, is forced to live with her two spinster aunts, Natalia (Delia Casanova) and Evangelina (Diana Bracho), in the city of Guanajuato, where both are highly respected for their ancestry and morality.

Natalia is excessively affectionate and understanding, while her sister, Evangelina, is extremely repressive and authoritarian, in addition to possessing the leadership within the family; therefore, she has to be granted total obedience, which causes Cecilia not to live her youth naturally.

Fortunately for her, Cecilia has a friend who becomes her only contact with external reality; this is Sofía (Cynthia Klitbo), a schoolmate of the same age, but with an open and free perspective on life. Over the years, a strong bond of friendship and trust has been established between the two young women, despite Evangelina's opposition.

This friendship seems indestructible, until the appearance of Gerardo (Raúl Araiza), a handsome young man, who is initially attracted to Sofía while Cecilia only inspires him a little pity. But over time, Gerardo's feelings change, until his pity ends up turning into deep love, which will cause Sofía to break their ties of friendship and become a terrible enemy for the couple.

• Diana Bracho as Evangelina
• Daniela Castro as Cecilia
  • Karen Beatriz as Child Cecilia
• Delia Casanova as Natalia
• Raymundo Capetillo as Renato
• Tina Romero as Martha
• Cynthia Klitbo as Sofía
  • Priscila Reyes as Child Sofía
• Hilda Aguirre as Elena
• Raúl Araiza as Gerardo

• Alexis Ayala as Víctor
• Luis Cárdenas as Salvador
• Bolívar Hack as Roberto
• Raúl Magaña as Joaquín
• Aurora Molina as Jovita
• Roberto Montiel as Felipe
• Marcela Páez as Sister Angélica
• Raquel Pankowsky as Inés
• Ivette Proal as Elsa
• Gilberto Román as Manuel Alejo
• Cecilia Romo as Chief Nun
• Miguel Córcega as Father José María
• Fernando Luján as Father Julio