Teresa is just finishing high school when the secret she's kept from her boyfriend for two years is revealed, now she will lose everything.

Teresa is humiliated by her ex-boyfriend and the kids at school who found out about her economic situation, but the experience will make her stronger.

Teresa faces her enemies and swears vengeance, but in the face of rejection, she realizes her first love is still waiting for her.

Teresa makes Mariano look bad so that Aurora will lose interest in him. Mariano confronts Professor De La Barrera and saying Teresa deserves better.

Teresa and Mariano love each other and decide to get back together. Teresa shows her enemies she got into the best university despite being poor.

Teresa puts school ahead of the gymnastics competition that was so important to her sister Rosita, who dies of heart failure the same day.

Teresa is hit hard by the death of her sister and vows to do whatever it takes to escape her life of poverty.

Teresa confesses her love for Mariano to Aurora, and Aurora decides to leave the country. Teresa decides to move on despite her sister's death.

Teresa gains Luisa's trust and she tells her how her parents died and how she and her brother have suffered. Pablito's health is worrying.

Teresa is frustrated about accepting charity from Aurora to dress well at work, and won't let her parents give Pablito what little money they have.

Teresa reaffirms her oath to escape from poverty. She comforts Professor De La Barrera when she finds out he was hurt when he was left at the altar.

Professor De La Barrera gives Teresa a cell phone. Mariano receives some expensive equipment for his studies. Aurora gives Teresa some clothes.

Teresa fakes being upset Aurora left, and lies to Paloma that she's pregnant with Arturo's baby. She and Mariano go to Aurora's house in Cuernavaca.

Teresa and Mariano consummate their love at Cuernavaca. The neighborhood awaits the results of Pablito's operation at the hospital.

Teresa confesses to Professor De La Barrera she was the one who convinced Paloma to leave him. Teresa's mother suspects Teresa is with Arturo.

Teresa is worried because Arturo found out about her lies to Paloma. Teresa's mother reminds Professor De La Barrera to keep it professional with her.

Teresa is mad at everyone. Her plans might fall apart if Arturo clears things up with Paloma. Luisa visits Teresa's mother to defend her brother.

Teresa is furious with her mother and Mariano for doubting her and refuses to forgive them. Professor De La Barrera is mad at her for lying to him.

Mariano goes to talk with Arturo and convinces him to continue supporting Teresa's studies. Teresa forgives him, as she and doesn't want to lose him.

Teresa is humiliated again at the university for being poor. Her ex-boyfriend Paulo gives her a new computer in exchange for her help with schoolwork.

Teresa is accused of having a relationship with Professor De La Barrera. Teresa defends herself and teaches her enemy a lesson for her slander.

Teresa goes to the hospital to see Pablito and finds Paloma there, who warns her that Pablito is part of her family and she won't let her visit him.

Teresa fights with Mariano, who instead of giving her the ring, pawned it to help his father. He feels bad and gets money from Luisa to buy it back.

Ruben confronts Teresa for making an appointment with his daughter at the same restaurant as them to start a fight. Mariano gives Teresa the ring.

Teresa asks Mariano to do whatever he can to get her out of the neighborhood. Aurora returns from Paris and wants to surprise Teresa.