Hard times come to the life of the main character - he is fired from work, his family life is about to end in divorce. In addition, the spouse restricts communication with children, which for Daniel Hilard is like a low blow. But the children who are very fond of their father also suffer from the decision of the wife. In addition, Mrs. Hilard is forced to hire a nanny because of her full time job. Daniel grabs the opportunity to be closer to the children. He appeals to his brother, who masterfully transforms a man into an elderly, good-natured woman of pleasant appearance. From now on, Daniel plays the role of nanny Mrs. Doubtfire. But what is the innocent lie fraught with?