When Juan Dominguez (Eduardo Santamarina) meets Nidia Cachón (Silvia Pasquel) she tries to seduce him. At Nidia's home he meets her daughters Yadira (Daci Arcaraz) and Marely (Florencia de Caracho), at once he falls in love with Marely, love at first sight. When Nidia's husband gets home, she introduces Juan; he takes Juan to his office and asks him to take care of his family after his death. When Juan leaves the office, he commits suicide.
At the funeral, Nidia discovers that her husband had an affair with Ana Davila (Maria Marcela) and that Paula (Mayrin Villanueva) is their daughter. Ana and Paula decide to go to the funeral. Nidia gets mad and demands they leave because they don't deserve to be there. Ana tells Nidia that they, like her, have the right to be there.
The Cachon's family is left with no money. Mr. Cachon in his will leaves all his money to charity and leaves the house to Ana and Paula; but Nidia with her lawyer falsify the will and leave Ana and Paula out of the will.
Paula decides to leave her studies in the states and return to Mexico to accompany her mother. She tells her mother that she wants to be close to her and for that she will live and find a job in Mexico. She finds a job in "Empresas Farell" as a vice-president. At the same time Juan begins to work in Empresas Farell as a driver.
When Cesar Luis Farell (Alexis Ayala), the president of Empresas Farell, meets Paula he begins to seduce her. But Paula is aware that Cesar Luis is married and that he has a relationship with Ivonne (Arlet Teran), his secretary, so she doesn't accepts his courtship.
Cesar Luis tells Paula that he and his wife Monica (Renee Farsi) are getting divorce: believing that he will soon be a single man falls in love with him. After Cesar Luis asks Monica for a divorce, she tells him that she is pregnant. Paula thinks that Cesar Luis has never thought of getting a divorce, she decides to get revenge and starts dating Juan. Not knowing what is happening, Juan soon realizes that Paula, not Marely, was his true love.
Cesar Luis tells her that he loves Paula. They eventually get a divorce and Monica has an abortion. Cesar Luis convinces Paula that he loves her and they get married. Paula tells Juan that she was just using him to make Cesar jealous. Juan heartbroken leaves the city.
Paula stop working and Cesar Luis continues with his love affair with Ivonne. When Paula is aware of that she gets mad and decides to go to live with her mother. She tells her mother that Cesar Luis was not the person she thought he was. Paula receives a phone call from Juan and she tells him that she misses him but Juan doesn't believe her.
Juan starts a business in his hometown with the help of Japanese investors. Juan is aware that he has a son with one of his ex-girlfriends once finding out that she had passed away he goes to meet his son and decides to raise him.
Juan returns to Mexico City a wealthy man and acquires Empresas Farrell's actions. He and Paula realize that they love each other and they want to be together. Cesar Luis out of spite fakes his own death and takes the place of his twin brother. As his twin brother he starts working at Empresas Farell and tries to win Paula's love. After finding the out the truth, Cesar Luis, running from the law, dies in a tragic car accident and Juan and Paula live happily ever after.
