Returning to My Past tells the story of Cecília (Helena Rojo), an educated, intelligent, beautiful and kind-hearted woman. That in the past, she was very humble and poor. She met Alfredo (César Évora), an ambitious young man who decides to leave his city of Monterrey to try a better life in the country's capital. The boy arrives in the village, where Cecília lives with her sister Carmen (Ana Bertha Espín), a cold and ambitious woman; looking for a place to live. He soon finds himself in love with Cecilia. However, Carmen pressures her sister to "end that madness", because like her sister, she also found herself in love with Alfredo. But Alfredo and Cecília were already planning to get married.
Two months after the wedding, Cecília discovers that she is pregnant and in a plan by Carmen, Alfredo ends up abandoning Cecília and asking for a divorce.
Leaving aimlessly, Alfredo meets Ernesto (Ricardo Blume), who takes him to Switzerland, where the boy ends up working in the smuggling market for precious stones. Later, he meets Maria Inês (Jacqueline Andere), a rich young woman from a traditional family and sees in her the possibility of getting rich and having his name known in high society and marries her.
And Cecília, abandoned and fragile, meets Frederico Ruíz (Eric del Castillo), an important lawyer, who falls in love with her and asks her to marry him. Two years later, the couple has a son, Eduardo (Alfonso Dosal).
Years later:
Cecília, with the help and support of Frederico, became a very famous architect and an intelligent and determined woman. She lives in the capital with her children and husband, as well as being closer to her sister Isabel (Diana Bracho) and niece Luciana (Marisol del Olmo). She has overcome the death of her daughter, but is tormented by the idea of having lost her daughter.
While Alfredo became a millionaire and important businessman in the gemstone business and runs a large jewelry store.
He is married to Maria Inês, who is dedicated to making her husband hell and taking an active part in the business of Joalheria Mendoza y Reyes.
Alfredo and Maria Inês have two children: Suzana (Silvia Navarro) and Leonardo (David Zepeda)
What Maria Inês cannot imagine is that Alfredo has a lover, Valentina (Esmeralda Pimentel), a young woman from the countryside. influenced by her mother Carmen, who wants to take advantage, using her daughter to take money from Alfredo; since she hasn't seen her sister Cecília for years.
A story of Alfredo and Cecília's past, who they thought was dead and buried, will resurface through Helena, their daughter. Influenced by Isabel and Carmen, Helena (Ana Brenda Contreras) decides to look for clues from the past to find her real father.