Eugenia and Arturo De La Riva are husband and wife. They have been happily married for ten years and have a daughter, Aranza, who they love dearly. Little do they know that their family's happiness will be sorely interrupted. Sonia, a cousin of Aranza is secretly and compulsively in love with Arturo and tragedy will strike their family as a result of this obsession.
While the story of Arturo and Eugenia unfolds, Isabel Lopez Cerdan is experiencing a tragedy of her own. She has spent two years believing she is married to Fernando. She is in love and has never loved another the way she loves him. Unfortunately, she will soon discover that he is not the man she thinks he is.
After a series of inconceivable events, Arturo and Isabel cross paths. They believe they can help each other as they recover from their individual misfortunes. They have no way of knowing that their introduction will open the door to another series of enormous obstacles carefully constructed by both Aranza and Fernando, whoís actions prove that they have no intentions of leaving quietly.
Aranza le avisa a Sonia que ya tiene el dinero, ella la enga√Īa para encerrarla con Arturo. Aranza y Arturo se enteran que Sonia mat√≥ a Eugenia. Marcela lleva a Isabel con Javier para intercambiarla por Arturo.