In the fourth film in the series, in 1910's Russia, a few acts of clumsiness puts Indy at odds with his father who is greatly displeased with Indy. Indy runs away into the Russian countryside and wakes in the morning on a haystack. He encounters colorful Gypsies, fierce Imperial Cossack troops, and an odd, cantankerous old man named Leo Tolstoy, who is in full agreement that "hell" is other people. Later, in Greece, Indy meets Nikos Kazantzakis, the writer who would some day write Zorba the Greek.

Concert master Karel Mašek is a drunk, as well as engineer Danda and other regular guests of the pub U Kroců. Mašek returns from the pub in the morning and promises the woman that he will stop drinking. But he failed again, and the orchestra players refuse to play with him. Danda returns home without a bag and goes to Krocs again in the morning, even though he has an important job at work. He has been degraded to subordinate job position, but he refused to admit it at home.

Several bittersweet stories set in a Prague apartment building.

Lost Children (Czech: Ztracenci) is a Czechoslovak war film directed by Miloš Makovec. It was entered into the 1957 Cannes Film Festival.