Alejandro Méndez is a successful man, married to Isabel, and has two grown children, Pablo and Helena. He loves his breeding ranch that specializes in providing animals for bull fights. Between the ranch and a real estate business, the family enjoys an affluent standard of living.
Alejandro's life changes when Isabel dies suddenly under dubious circumstances. Alejandro falls into a depression and abandons all interest in life, his ranch and the people he loves.
Diana is a veterinarian who meets Pablo at a nightclub and turns him down due to his rich-boy attitude. Pablo is obsessed with her end and when Diana is hired to work on the ranch, tries to seduce her.
Milciades, a landowner envious of the ranch, joins forces with Déborah in a conspiracy attempt. She is treacherous woman who married Isabel's father out of sheer interest and will try to eliminate her from the picture to conquer Alejandro and obtain his fortune.
The ranch is in midst of a crisis and Diana defends it. She seeks Alejandro to pull out of his depression because his family needs him. Diana convinces him to return, to fight for the only true thing that will bring his life back.
One day, Diana discovers that Alejandro is also in love with her and at the same time, Pablo finds out his father has stolen her. Pablo threatens to take his own life and manipulates the situation to get Diana's attention. She feels imprisoned by the turn of events and Alejandro feels terribly guilty, so he falls back to avoid hurting his son. Milciades and Déborah set a trap that will lead to conflict between Diana and Alejandro. Pablo realizes that his father is Diana's one true love and convinces him to fight to reconquer her heart.