Ryszard Malewicz, a young inventor, is out of work. He had been waiting for months for a response from the ministry to which he had sent plans for his invention, an explosive of extraordinary power. Desperate Ryszard is comforted by his mother and his fiancée Maria.

Jan Polaski, after graduating from an aviation school, returns to his hometown as an aviation officer.

In the beginning of the 20th century, Polish students are fully aware that the education system is not one in which the truth is taught, but rather one their government wants them to learn. A student contradicts his professor's stance that Suworow was one of Poland's greatest leaders. The argument between the two eventually leads to a wide strike.

Wincenty Poziomka tries to earn his living and falls in love.

In West Africa, Polish intelligence sergeant Milczek discovers the bandit Sheikh Abdullah’s desert stronghold but is captured until the sheikh’s wife, Jamila, secretly rescues him and follows him into safety. When Jamila sees Milczek with a European woman and believes he has betrayed her, she returns to warn her husband, prompting the bandits to lay a deadly ambush against the approaching French expedition.

The story of two friends Adam and Zygmunt, serving in the floatplanes escadrille of the Polish Navy.

On the day Andrzej graduates from police academy and receives his officer's stripes, his father, a senior police officer, is murdered. Andrzej, assigned to the investigative brigade, tries to find the murderer, who turns out to be a member of an international gang of counterfeiters. The mysterious ringleader resorts to the help of Janina, an innocent girl who has nothing to do with the criminals. He blackmails her into pretending to be in love with Andrzej and extracting the necessary information from him. But the girl falls in love for real, and he falls in love with her too...

A wanted Pole arrives in Tsarist Russia and assumes the identity of a Police Chief.

The film presents the problem of women forced into prostitution abroad. Marysia Żurkówna is looking for a better life, she believes that when she leaves, she will go to a better world. A terrible disappointment awaits her. The "kind" people who organized her departure have prepared a cruel surprise for her - she is to become a prostitute. What can a lonely girl in a foreign country do in such a situation?

Commander Korski, head of the Gdynia port, invites his police-commander daughter Marysia from Warsaw in hopes she will become engaged to Lieutenant Kotowicz, who is returning from America.