Synopsis:

Micaela is the story of a young Argentinean couple, Sebastiano and Micaela, who are involved in the vicious world of Benito, Sebastiano’s rich and powerful grandfather. Benito, considered to be a pious old man whose daughter, Rosa, is married to Antonio Gonzales, really controls organized crime.
Antonio, however, is a bigamist and already married to Lidia, who hides a terrible secret: raped by Ermanno Fioriti, Benito’s right hand man, she gave birth to Micaela. Sebastiano is a journalist living in Italy, married to Claudia with whom he has a son. Micaela, now a young photographer, is in Milan for a course. The two meet by chance and, unaware, become friends.
However, Claudia finds compromising documents regarding the mysterious death of one of her models and during a fashion show is killed.
Sebastiano returns to Argentina where his grandfather offers him a job in his newspaper, giving him an opportunity to discover who killed Claudia with the help of Micaela. Meanwhile, Benito and Ermanno discover Antonio’s double life and kill him. At the funeral, the two families discover the truth and to their horror Micaela and Sebastiano believe they are step brother and sister.