I saw this novela about 1981 so the details, in some respect, are a little hazy. The lead actress,Andrea Del Boca, plays a young teenager named Andrea who is returning to her home in Buenos Aires after spending years in New York with her aunt and uncle. The heroine was born with a heart defect and had to be hospitalized until her operation could take place. Her parents are overjoyed to see her, but the same can't be said about her older sister Mariana. Mariana was always jealous of the attention that Andrea received from their parents due to her illness, and also because she was greatly loved by everyone for her sweetness and unselfish nature. Mariana had become accustomed to being the only child during her sister's absence and resents her return. Mariana is currently seeing a handsome, if somewhat rebellious young man named Nino, and has become obsessed with him. He thinks of Mariana as mostly a friend, but becomes attracted to her fifteen year old sister,Andrea. Mariana sees his interest and does everything in her power to destroy their budding romance by telling lies to both Nino and Andrea in order to separate them. She is aided in this by her mother's cousin, an embittered and lonely woman, who is reluctantly taken into the household by the girl's parents. It is later discovered that the cousin is Mariana's real mother. When the man she loved abandoned her when she was pregnant to marry another woman, she gave Mariana to her cousin to raise as her own child. I think now that many people would be disturbed by the idea of a fifteen year old girl becoming involved with a young man in his twenties, but in Argentinian culture back then it was more acceptable. Especially when you learn that the heroine's mother married her husband at age seventeen after a three year courtship. There were no sex scenes other than a few somewhat chaste kisses, but the romantic intensity and interaction between the two main leads, Raul Taibo and Andrea del Boca, made the storyline believable since theirs was more of an emotional and spiritual connection. The main fault that I have found in the novelas from Argentina is that they never seem to know when to quit. They drag out the stories far too long and then try to wrap up the endings in just a few weeks, however, the acting is usually excellent and they have some of the most gorgeous men and women performing in them! I definitely include the sexy and handsome Raul Taibo among the latter, and he is also a fine actor!