A comedy about four "friendly" couples whose honesty, sincerity and also selfishness are put to an unexpected test. One of them, František, urgently needs to borrow twenty thousand crowns to buy a holiday cottage at a bargain price. The irony of the story is that Honza, who spontaneously lends him the money, becomes the object of suspicion in the company of calculating and suspicious friends.

A young man from a poor proletarian family successfully graduates from university, meets a girl who grew up in an orphanage - and surprises his surroundings, greedy relatives and a friend from a rich bourgeois family, by refusing any benefits. He regularly visits his parents to help them build their house, trying to act honestly at all times.