Dr. Mariano Amor is a well-known physician, desired by women of all ages. He loves women, but never allows his relationships with them to get too serious. One day, a 35 year old man appears at his doorstep with three kids, all of which will change his life forever. The man is Fernando, the son he never met, and the kids are his grandchildren. Mariano is confused by this encounter and becomes even more puzzled when Fernando, also a doctor, asks him to take care of his children while he is away on a medical congress. Dr. Amor decides to hire a nanny to help him, and it is then when destiny puts him face to face with Angeles, a taxi driver desperate for work, who in reality has no skills for the job. That, however, does not stop her from lying about her references and convince Mariano that he has to look no further. Mariano, used to a carefree life, struggles to accustom to the new situation, but in time he forms the loving family he never had with Angeles and the kids.