Barbara Greco harbors a dark secret of murder and deceit, unbeknownst to her employers, the Elizaldes, a prominent family with a successful dairy business. She soon climbs the ranks and begins to execute a plot to bring down the entire family. As part of her scheme, she separates the young lovers Fernanda, the youngest daughter, and Eduardo Juarez, the son of Fernanda's nanny. Fifteen years later, Eduardo returns to seek revenge against Barbara for ruining his life and that of the Elizaldes.