The Vagaries of Youth

Eva, an energetic daughter of a government councillor Minařík, and her friend Alena go to the Beskydy Mountains for a ski race at the invitation of the landowner Matoušek. Beskydy customs officers are worried about a gang of smuggler Janek and some others. The financier Filip Kříž even gets shot and dies. This is the third victim in six months. Councillor Minařík sends Chief Financial Commissioner Dubský to the border to put things in order. Dubský is in love with Eva. Dubský's friend, the financial commissioner and poet Burda, who is in love with Alena, goes to the mountains with him. Meanwhile, Janek's gang continues to smuggle in the mountains. A mountain girl dressed as a customs officer seizes the smugglers’ group stolen goods. Dubský stays with the old financial inspector Holubička, whose frightened daughter Marča falls unhappily in love with Dubský with help of the beggar Buzková. In the tavern, Horák reveals to his friend Valach how he and his wife have tricked Janek. They are secretly questioned by the innkeeper and Dubský, who arrests Horák. Subsequently, the customs officers arrest Janek's gang, including smuggler Stibor, only Janko escapes. At the hotel, Alena becomes engaged to Burda, while the inept big landowner Matoušek unsuccessfully tries to win over Eva's heart. Dubský searches in vain for Janek for several days in the woods and mountain huts, having constantly Eva on his mind. After a big engagement party, Eva, Alena, Matoušek and Burda take part in a ski race and go on a ski tour the next day. Holubička and the customs officers Mašek and Chotaš do not like Dubský's eagerness in finding smugglers and suspect him of espionage because of his expensive clothes. During the hike, the tourists get trapped in a big blizzard, in which Eva gets lost. She is rescued at the very last moment by Dubský and carried to a mountain hut. Burda, Alena and Matoušek arrive at the hotel; the search for Eva begins. In the hut, Dubský is injured by a nail, so Eva takes care of him, cures him, and later lets him to take over her. In Prague, Minařík and his wife, who has returned from a medical treatment, reflect on their youth, and think about their daughter. Marča is worried about Dubský and decides to go look for him. She arrives at a mountain hut, but through window she can see Dubský and Eva hugging, which makes her upset. Eva, who thinks of Dubský as a mere customs officer, resists loving a man to whom she would be a burden as a girl from upper class, and so she leaves. Dubský manages to get Janek and returns to Prague. As a reward, in addition to his promotion, Minařík invites him to Eva's eighteenth birthday party. Meanwhile, the girl worries that she has betrayed and abandoned Dubský. She confides in Alena, but their conversation is secretly overheard by Eva's mother. She suggests to her father that he engages Eva to Matoušek at the party. At a lavish banquet gathers very exclusive company. Dubský also arrives and the unhappy Eva learns who he really is. With the help of Alena and Burda, the girl reconciles with Dubský and, despite her father's initial reluctance, becomes engaged to him in front of everyone. The big landowner Matoušek congratulates the future married couple. (Based on the original script)