In a mining town south of Venezuela lives Mariana Montenegro, a young, romantic woman who is rumored to be cursed, as all the men who fall in love with her end up suffering in a fatal accident.
Mariana is motherless, but lives with her father Atilio Montenegro, a wealthy landowner who owns several mines where he has enslaved the employees by making them work hard while paying them little.
But this continues until Ignacio Lugo comes to town, a young and attractive journalist who introduces himself under a false name in order to search for his origins.
Angry and resentful, Macaria tells his brother about the relationship making Atilio inquire about the origin of Nacho, and he finally discovers that Ignacio Lugo Navarro is his son, the product of an affair with Lucrecia, the owner of the restaurant in town.
As the legend of the beautiful woman who always wears black because she weighs about a terrible curse: Mariana de la noche.