Beatriz Aurora Pinzón Solano, known as "Betty", is a young and unappealing economist who lives with her parents in Bogotá. Finding it hard to get a job, she begins to work as secretary of the president of Ecomoda, one of the most important fashion companies in the country. In a short time, Betty gains Armando's personal trust and helps him hide his infidelities. Likewise, she must constantly face the insults of Patricia Fernández, another secretary of the presidency and close friend of Marcela.