A pesar de su pobreza, de no haber conocido a su padre y de llevar una vida vagabunda de jornalera, Teresa Hernández alias "La Gaviota" era feliz. Su felicidad se tronchó el día que en la hacienda de Don Amador Montalvo, conoció a Rodrigo, el nieto del dueño.
Rodrigo despojó a Gaviota de su virginidad, de sus sueños, la embarazó y la abandonó con la promesa de un reencuentro en el mismo lugar en un año de plazo. Durante ese año Gaviota vivió experiencias espeluznantes. En busca del padre de su hijo se fue a Europa donde fue presa de un prostíbulo en Paris y paciente invalida en un hospital en Londres.
Endurecida por sus experiencias y la perdida de su hijo, Gaviota regresa a México a cumplir su promesa, sólo para descubrir que en la fecha escogida Rodrigo se casa con otra. La desilusionada Gaviota, acompañada de su madre, se marcha a la capital a vivir una vida de miserias y malos empleos.
Todo termina el día que la muchacha decide buscar empleo en las empresas de los Montalvo. Con gran astucia y perseverancia convence a Aarón, el primo de Rodrigo, de que es una profesional instruida.Tras conseguir empleo, Gaviota logra ascender en la empresa hasta convertirse en la mano derecha de Aarón. ¿Qué sucederá el día en que Rodrigo descubra que su ex amante es ahora una importante ejecutiva?
The story begins in the fields of Jalisco, where the harvesting of the agaves takes place each year. workers Teresa "Gaviota" Hernandez and Clarita Hernandez go on the bus from Guadalajara to Tequila and from there, go to La Montalveña Hacienda, property of Amador Montalvo.
At the same time, Amador comes to Tequila with his wife Pilar. The patriarch of the Montalvo family has a feeling he will die, but his wife tells him it is nonsense. While his son Felipe and his wife Constanza are visiting, Amador is dying, and he tells the overseer of the Hacienda Roman, to not leave Gaviota and Clarita without work.
Meanwhile, most of the family is overseas. Bruno, son of Amador and Pilar, and his wife Fedra, are in New York City managing the headquarters of the Montalvo Corporation. Rodrigo, Aaron, and Sofia are living in London (Sofia is living with James O'Brien), and Daniela is in Paris studying dance. The four get calls from the rest of the family saying Amador is dying, so they leave what they are doing and leave at once.
Amador dies, and the funeral is held the next day. At the mass that is held for him, Gaviota leaves some flowers at the coffin, and Rodrigo goes to the front and pray at the same time as Gaviota. That is how the two first meet.
Gaviota and Rodrigo begin meeting each other, and Rodrigo tells Gaviota that he will have to go to London and keep on studying for a doctorate at Cambridge University. The day before Rodrigo has to go, he and Gaviota go into the agave fields and make love.
After Rodrigo leaves, Gaviota finds out she is pregnant. So she goes with this photographer who has been bothering her every year she comes to take pictures as a model and send her to Paris. Gaviota accepts, and in the end, goes to Paris with Madame Colette (Rebecca Mankita). At her arrival at Paris, Gaviota finds out she was tricked, and finds out she was sent to work as a prostitute.
Gaviota escapes, and since she hasn't eaten food, she faints in front of a restaurant. Benvenutto Verducci, the owner of the restaurant, helps her and gives her money to go to London. At her arrival, Gaviota searches for Rodrigo, untl she sees him at the corner of a street. Excited, she crosses the street without looking, and she ends up being run over very grotesquely by a car. Rodrigo sees the accident, and he goes for a closer look, but he doesn't see who it is because he gets a call from his uncle Bruno saying that his parents, Constanza and Felipe, died in a plane accident at Toluca International.
