A village shop owner is convinced by his children to move to Prague, where they say he'll be able to enjoy a fine retirement in a modern furnished apartment. Bored by life in Prague with nothing to do, the old man takes to helping a young widow in her stationery shop.

An elderly rich lady, Hyacinta Horáková, is leaving for a spa. She entrusts her terrier Bobík to her sister-in-law Ludmila and her daughter Marcela, who live in her villa. The dog mysteriously disappears before long and there is no choice but to publish an advertisement promising a reward. In the newspaper's administration, advertising artist Ludvík Zoubek notices Marcela. He would like to please the girl who has charmed him and starts looking for the dog...

The shopkeeper František Diviš offers cheap goods at the fairs, while the co-owner of the traveling variety show Bohouš Vosáhlo offers unpretentious folk entertainment. They therefore meet very often. Neither of them earns a comfortable living from their work, but they do not allow themselves to worry unnecessarily. However, this changes when a little boy enters their lives. Pepík is an orphan, there is no one to take care of him, and both fairground vendors cannot resist the plea in the children's eyes...