Hungarian scientist and man of letters and leisure János Bátky (Iván Darvas) enjoys sparkling society life, spending his evenings in the company of various ladies. Ilonka, his long-suffering secret companion of several years, manages to make the bachelor almost truly fall in love – however, he is afraid of marriage and prefers to push her away.

Zsófi, the young nurse is surprised to see how difficult it is for some people to change their habits. She uses rather strict methods to make people get used to cleanliness and healthy diet and to create a proper life style for the women when pregnant. Doctor Varga, who has lost faith in his wife, tends to accept the young nurse's clever arguments in more and more matters. Later he falls in love with the dynamic girl.