The father of his girlfriend does not want her to spend a few days with Carlos, so he needs a companion. Therefore, he asks a friend to pretend to be his aunt. This will create endless trouble and confusion, especially when the real aunt of Charles arrives.
Don Juan Alcántara, who from a village apothecary became a financier, is ruined. He does not dare to confess it to the family, since the unanimous opinion of those who know him is that he is a squawk. His lack of character is remedied by his doctor, who provides the recipe for everyone to obey: pretend that he suffers a crisis of madness and that if he takes the opposite may lead to homicide.
Leandro Cano, grandfather of many grandchildren, coincides in the clinic of Dr. Bolt with Elena, a lady already advanced in years. The doctor makes every effort to make them meet, and thus overcome their feelings of loneliness.