Carlos Larios gets an anonymous phone call, revealing the relationship between his wife and his brother. He tells Catalina that he will ruin her. She kills him. We discover that Alejandro, her son, has a homosexual relationship.

Carlos' will states that his fortune will be for the child that gives him his first grandchild. Luis, a journalist, learns that Carlos was murdered. Catalina kills the coroner to shut him up. Catalina runs the traffic of diamonds from Sierra Leona.

Catalina lays a trap to Jose Carlos, her stepson, who is arrested for beating a woman. Alejandro introduces Leonora to her mother, and Catalina thinks she is perfect to give Alejandro a son.

Catalina plans a trip to Acapulco with Francisco, her brother in law and lover. Alejando and Leonora make love, and he starts a double life. Leonora meets Jose Carlos and feels the attraction. Ambar, Francisco's wife, has a fight with Catalina and she ends up kidnapping her.

Miguel goes to the jewellery looking for Alejandro. They have a sexual encounter, and Jose Carlos discovers them. A jealous Luis warns Leonora about the dangers of that family. Catalina keeps Ambar locked up, but she gives her an overdose and asks Diego, her accomplice, to get rid of the body.

Catalina has dinner with Alejandro and Leonora, and gets her to feel comfortable. Gelica finds out that Catalina has Ambar's cellphone. Catalina gets threatened: she has to give them 500 thousand dollars, or her secret will be revealed.

Catalina pretends that she will cede to the blackmailing. Leonora gets the blackmailer address because she thinks there is a news to pursue. Catalina goes to Mr X's apartment and kills him, just when Leonora arrives.

Miguel leaves Alejandro and goes to Chile. Catalina convinces him to marry Leonora. One month later, we learn that Ambar is alive and ready to get revenge. Alejandro goes after Miguel, ready to get back together, and tells his mother that the wedding with Leonora is off.

Alejandro decides to marry after learning that Leonora is pregnant. Jose Carlos remembers Catalina making love with a man. Miguel arrives to stop the wedding, but he can't do it. Alejandro, devastated, tries to kill himself. Jose Carlos finds Ambar's earring.

Jose Carlos tells Francisco that he started to remember, and Catalina listens. Catalina orders an attack on Luis, not knowing that Leonora will be with him. They have a motorcycle accident, that puts the baby's life at risk. A girl named Vicky claims that she is expecting Jose Carlos' baby.

Catalina tricks Vicky into getting an abortion, and Jose Carlos suspects that his stepmother had something to do with it. Leonora decides to work at the jewellery. Catalina uses Ambar's earring to provoke her. She presents herself in front of Catalina and Francisco with a weapon. She shoots them.

Francisco y Catalina get out unharmed from Ambar's attack. She tells her husband what Catalina did, but he does not believe her. Jose Carlos is more and more in love with Leonora. A mule who transports diamonds for Gothier dies, and they get rid of the body. Luis is threatened with Matias life if he doesn't stop investigating Gothier.

Catalina finds out that Diego left some of the diamonds in the mule's body. Francisco decides to go to the gas station from where Ambar escaped, and asks for that night's videos. Luis gives Jose Carlos his contact in Sierra Leona so that he can investigate. Catalina arrives at Diego's house ready to kill him.

Ambar calls Alejandro and tells him that Carlos was not his father. Catalina leaves her in a coma. Jose Carlos finds out that Gothier is involved in the traffic of diamonds from Sierra Leona. Leonora realises that she thinks a lot in Jose Carlos. Diego kidnaps Catalina and rapes her viciously.

The police rescues Catalina, but Diego runs away. Jose Carlos tells Leonora that Gothier is involved in the diamonds traffic. After a few months, Miguel returns to Mexico and Alejandro decides to go with him. Leonora is in labour, but things get complicated and she is about to die.

Leonora's baby is born, and she is out of danger. They find the mule's body with the diamonds within. Ambar gets out of the coma. Alvaro discovers the relationship between Alejando and Miguel. Diego makes an appointment with Jose Carlos to show him the evidence against Catalina, but he finds him dead.

Jose Carlos goes to the DA Bustamante to report Catalina. Ambar tells Alejandro that his real father is Francisco. Alvaro calls Leonora and tells her where to find Alejandro with his lover. She arrives and finds Alejandro kissing Miguel.

Leonora leaves home, leaving her wedding ring to Gelica. Catalina asks Vega to get rid of the DA. Bustamante is killed by hitmen in front of Jose Carlos. Catalina decides to get rid of Miguel, and throws him from the top of a construction site.

Vega tells Catalina that they found Leonora's ring and some hair where Miguel was found dead. Alejandro is devastated and tries to shoot himself. To stop him, Catalina tells him that Leonora killed him. Leonora is arrested, and Alejandro takes her son, full of anger.

Leonora is desperate because they took away her son. Vega tortures the watchman of the construction so he declares against Leonora. By orders of Catalina, Leonora gets beaten up in her cell. Alvaro leaves a message for Alejandro, saying that he saw Catalina killing Miguel.

Alvaro gives Jose Carlos his cellphone with the video of Catalina pushing Miguel, although it can't be clearly seen. Catalina cuts Alvaro's tongue. The police arrives looking for Catalina, but Gelica takes the blame, saying that she killed Miguel.

Leonora walks free. Jose Carlos tells her that he loves her, but she is not ready. Alejandro gives the baby back to Leonora. Francisco gives Jose Carlos information about the diamonds traffic, and Luis gives him evidence that his father was murdered. Gelica dies in prison, while Catalina is about to kill Francisco.

Francisco tells Catalina that he will run away with her. Ambar and Alejandro find out that the investigator that knew about Catalina and Francisco's relationship killed himself. Catalina orders to put a bomb in the plane that will take Jose Carlos to Sierra Leona, but finds out Alejandro has taken his place at the last minute.

Catalina tells Alejandro that there is a bomb in the plane, but it is too late to do anything. The plane crashes. Catalina is devastated because she killed her own son, and starts to organize her getaway. Desperate, she cuts out a mule to get the diamonds, killing him. She shoots Vega because she thinks he is responsible for Alejandro getting on that plane. Catalina kidnaps Leonora's son and ca...

Catalina gets rid of Francisco. Following Catalina and Francisco's steps, Leonora finds out that her ex-mother in law and her son are in the yacht. Catalina subdues her, but the police and Jose Carlos arrive with a great operative to rescue Leonora and the boy, and to neutralize Catalina. Things don't turn out well, because Catalina makes the yacht explode with her and Edgar on board.