Bruno Montt is a well-known Navy captain who widowed five years ago. Since then, he has dedicated himself whole heartedly, with strict discipline, to the education and upbringing of his four children. But this job has not been easy. Despite his efforts to be a great father, his children still need a mother. This is when Violeta, the butler's daughter, arrives at the Montt residence, taking the family by storm. While breaking the rules imposed by Bruno, she'll teach the family to see life in another light. In doing so, Bruno, who hides his sensibility behind the demeanor of a stern man, begins to experience once again feelings he had long forgotten. Meanwhile, Bruno thinks he finds in his secretary Rosario, the perfect woman to help raise his children, without realizing her main goal is to live a life of luxury and comfort. Between two polar opposites, Bruno will have to follow the most important rule of life - the one that states one must always go with one's heart.