[1] The script was written by René Muñoz and it is an adaptation of Delia Fiallo's original radionovela La mujer que no podía amar.
The majesty of the Mexican province is witness to a passionate love triangle: Yulissa (Claudia Ramírez) is the vertex of the dispute between the landowner Ignacio Aguirre (Sergio Goyri), master of the prosperous "Arroyo Negro" estate, and Luis Ángel Zaldívar (Luis José Santander), a prestigious medical specialist.
Yulissa is a beautiful young woman from a good family, who along with her brother, Alberto (Juan Manuel Bernal), and her grandmother, Paula (Carmen Montejo), live heavily in debt.
Their situation forces them to mortgage their assets, which is why Yulissa sees herself seriously involved with Ignacio Aguirre, because he desires her and she is the price of avoiding ruin.
However, a woman's heart is not sold to the highest bidder, it is given to the man she loves; therefore, from the moment Yulissa meets Dr. Zaldívar, both her life and prospects take a radical turn, while Ignacio, who does not know defeat, prepares to give battle.