Countryman Josef Bezoušek went to Prague for a longer visit in the family of his son lawyer. His son, daughter-in-law and granddaughter received him with open arms, so their grandfather quickly got used to them and he really liked them in the metropolis. He enjoys walks and city attractions, and inadvertently mixes with the story of the forbidden love of his sister-in-law's son. She lost her head for a poor young man, her father does not want her acquaintance and she imprisons a girl at home. Pantáta Bezoušek inadvertently finds himself right in the middle of the affair - and he is already in trouble. He himself would have endured him, but before leaving Prague, he wants to settle the whole matter for the benefit of unhappy lovers ...