Jan Leszczyc meets Amelia Holska at the bedside of his sick mother and he falls in love with her. Both he and Amelia do not know that her father Józef Holski is an international hotel thief. Persuaded by Torense, his former accomplice, he steals pearls from Julia's apartment, Jan's friend, and gives them to his daughter. She ends up in jail when the diamonds on her neck are recognized as stolen. Holski and Torense are hiding from the police. The depressed Leszczyc does not want to marry the criminal's daughter, but the criminal past of Leszczyc's father soon comes to light.

Two apartment house dwellers, although unrelated, share the same name. One is an older man with an appreciation for and love of classical music, while the other is a younger man addicted to swing music. The niece of the older man arrives for a visit and gets into the wrong apartment. Complications arise.

Two apartment house dwellers, although unrelated, share the same name. One is an older man with an appreciation for and love of classical music, while the other is a younger man addicted to swing music. The niece of the older man arrives for a visit and gets into the wrong apartment. Complications arise.

Polish seaman returns home from Tahiti with a native lover and a fortune in sacred pearls, gets seduced by a married woman unaware she is part of a gang trying to get his riches.

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.

Mania is the illegitimate child of a girl from the suburbs of Krakow and a lawyer. Bowing to the will of the family, he abandons the girl, leaving a large monetary "compensation". The girl dies, but before she dies she leaves a certain Mr. Majcherek a letter and a document, proving that Mania will be able to receive the money when she comes of age. The dishonest Majcherek (knowing the contents of the letter) must therefore wait 20 years to be able to apply for Mania's hand and thus come into possession of her property. Unaware of anything, Mania lives in the suburbs with Maciejowa (who took her in as a child) thinking that she is her daughter. When Majcherek begins to adore Mania it turns out that she already has two rivals - boys from the neighborhood. That's when the fourth one appears - handsome Zygmunt. Mania loses her head for Zygmunt. What she doesn't know is that he is in fact her real father's upbringing....

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...

Julek doesn't want to work, he prefers to sing on the street and marry his beloved. His family doesn't want to hear about it, to which Julek sings in the voice of Eugeniusz Bodo: "That's just how cold-hearted I am..."