Wealthy and ill Petr Kornel (Karel Hasler) is not pleased with the carousing lifestyle of his nephew. He stops supporting him financially and demands that he change his name. Out of gratitude Kornel bequeaths a substantial sum of money to his nurse Alice (Adina Mandlová) with the condition that she marries. Petr Suk (Hugo Haas), as the nephew is now named, visits the doctor. In the waiting room his X-ray is mistakenly switched with one of another patient's. On the basis of this he presently learns that he is seriously ill and has only one day of life left to him.

Attorney František Uher is known for his patriotic mindset and active assistance in disputes between the Czechs and the Austrian justice system. One of his clients is the poet Šulc, who, while staying with Uhry, discovers that the lawyer's wife Anna is flirting with Uhry's cousin Hojer. When Anna does not respond to Šulc's warning, the poet draws attention to Anna's relationship with Uhra. Uher wants to know the truth, so he returns early from a business trip and actually catches Anna cheating. Disappointment brings him to the "Batalion" pub in Old Prague, where Šulc also used to go some time ago. Here, Uher becomes a mentor to the poorest, but gradually falls into alcoholism. He once again finds strength and stands on the side of justice when he accuses the police in court of murdering poor Lojzík, who wanted to marry the unfortunate waitress from "Battalion" Mimi. After appearing in court, Uher is arrested and "Battalion" is closed. After his release, Uher becomes an organist...

Duchacek Will Fix It (1938) is a comedy film centered around the character of Duchacek, a man who believes he can fix any problem that comes his way. When faced with various challenges, Duchacek uses his wit and determination to find solutions, often leading to hilarious and unexpected outcomes. As the story unfolds, Duchacek's belief in his ability to fix everything is put to the test, resulting in a series of comedic situations and events.