A modern fairy tale that takes place in the present.

The series of children's films about Detective Martin, who intervenes in cases involving children, begins with this film. It consists of two short stories: in the first ("Three Bottles"), the young hero, escaping from an orphanage, gets involved in a robbery of postage stamps..., in the second ("Flying Carousel"), the children fight a dishonest owner of fairground rides...

The second installment of children's stories investigator Dr. Martin. The film has two stories:

Eight-year old Dominique has a name-day. Her parents have a gift for her, but only give it to her in the evening, when everybody has come home from work. Then she darts out, where her girlfriends are already waiting for her.

Czech nobleman Petr Vok of Rozmberk (Milos Kopecký) is no longer so young, but his amatory adventures continue to arouse the envy of men and the indignation of respectable ladies. In his "female retinue" at the chateau in Bechyne he has twelve comely girls, but he still manages to seduce the miller's wife and the maid. Lord Vok is in great financial difficulties. His elder brother Vilém advises him to marry a rich woman. Petr surprises him by announcing his intention to marry the very young Katerina of Ludanice.

At the end of the occupation, Vojta, a young worker, marries the daughter of a rich builder to protect her from being deployed to the German Reich. Vojta agrees because he secretly loves Alena. But when the newlywed's family learns that Vojta is suspected of anti-German actions in the foundry, the marriage is over...

An unemployed young man in the second half of the 1930s, he tries various ways of making a living and, under the influence of a group of communist youth, eventually goes to Spain as an inter-brigadista...

Jealous of her vapidly "good" sister's popularity, poisonous Viktoria doses pretty Klara's tea with a slow-acting fatal substance. As the latter grows hysterically weak, the former finds success increasingly compromised by guilt, blackmail, and the pesky need to kill others lest she be exposed.

Frantík arrives in Prague for the holidays and discovers an abandoned tram named Terezka. With local children, he secretly paints and hides it to prevent scrapping, then organizes a scrap-metal collection to raise funds for its restoration.