In the large Fritzenwalden house live several family members and close friends: Federico (Fede), Franco, Maia, and Nicolás, along with Delfina Santillán and Malala, who are part of the conflict within the house. In total, there are six main people living in the mansion, and their coexistence is fraught with tension, secrets, and power struggles.

Vany (Flor's little sister) arrives in this world and becomes a key figure in the house, changing the family dynamic. Also part of their inner circle are Tomás, Roberta, Dominique, Greta, and Matías, who are integral to their daily lives.

Federico Fritzenwalden is the head of the house and the family, maintaining order and making the decisions. He is serious, cold, distant, and very proper, with a firm and controlled demeanor, as seen in the series. The central focus of the story is the relationship between Vany and Federico: Vany loves Fede, and Fede loves Vany, but their relationship is difficult and fraught with constant obstacles.