Act I
The two brothers Stefan and Zbigniew and their servant Maciej are returning home from war. While enjoying a parting drink with their comrades, the brothers swear to remain single and to live in a household free of women, in order to be ready to lay down their lives for their country when needed. "For if I married a lovely woman, how could I leave her to go to war?"

On arriving at the family home, the brothers are given the traditional welcoming offering of bread and salt, and they look forward to a life of peace and tranquillity. Their dream is soon shattered by the arrival of their aunt Czesnikowa, who immediately unveils her plans to marry them off to two girls she has chosen for them. The brothers explain their vow, and inform her that they are off to visit an old friend of their father's, Miecznik, (the "sword bearer") to collect money due to them.

Miecznik lives in a manor at Kalinow, and he has two daughters with whom Czesnikowa is sure the brothers will fall in love, contrary to her own plans. She tries to put them off their visit by telling them that the manor is haunted.

Act II
It is New Year's Eve and, inside the "haunted" manor, Miecznik's daughters Hanna and Jadwiga are preparing for the customary fortune-telling to determine who will be their future husbands. Wax is melted, and they see the shapes of soldiers' helmets, pikes and chargers. Hanna is being courted by a foppish barrister, Damazy, who insists that he can see his wig and tail coat in the wax. Miecznik looks on indulgently and then explains to the assembled crowd that the type of husband he seeks for his daughters is brave, a soldier and a patriot, mindful of customs and traditions – a description that Damazy does not measure up to.

Czesnikowa arrives in advance of Stefan and Zbigniew, with the intention of portraying them as cowards in order to put Miecznik and his daughters off. At that moment, a hunting party led by Skoluba bursts in, and a heated debate concerning the killing of a boar ensues. Skoluba is adamant that he killed it, but it transpires that two strangers and their servant were seen at the time of the shooting and that one of the strangers actually shot the boar. Stefan and Zbigniew arrive with Maciej, and the two sisters decide to test out what Czesnikowa has told them by playing a trick on the brothers. Damazy, anxious to eliminate his potential rivals, has the same idea and involves Skoluba, who had hoped to take credit for killing the boar and now resents the brothers' presence, in his plan.

Act III
It is night. The visitors retire to bed, the brothers in one room and Maciej in another, where Skoluba points out two life-size portraits of fine ladies, and a clock, all of which have magic properties. In an aria with a splendid triple-time melody, he successfully manages to scare Maciej out of his wits, and then he leaves him alone.

Stefan and Zbigniew arrive and merely laugh at Maciej's superstitious fears. Zbigniew takes Maciej off to sleep, leaving Stefan alone. The clock mysteriously chimes and Stefan is reminded of his mother. Zbigniew, unable to sleep, joins him and the brothers admit to each other that they have fallen in love with Hanna and Jadwiga, despite their vows. They are completely unaware that the two girls are hiding behind the portraits, and that Damazy is in the clock. They decide to investigate the source of the strange sounds they hear. Damazy comes out from his hiding place and, to save his skin, invents a story (told to another fine tune) that the house is known as the 'Haunted Manor' as a result of it having been built with the proceeds of some infamous acts. The rather moralistic brothers decide they cannot stay, and make plans to leave straight away.

Act IV
Discovering the boys about to leave, Miecznik believes them to be cowards after all; but Maciej repeats Damazy's story. Miecznik is about to reveal the truth about his house when a party of revellers and dancers burst into the house, one of whom is Damazy in disguise. When confronted, Damazy explains that he is in love with Hanna, and leaves hurriedly.

Miecznik then explains that his great-grandfather had nine beautiful daughters and that every man who came to the manor would propose to one of them. Envious mothers with unmarried daughters who lived nearby grew to refer to the manor as "haunted" as it obviously had magic powers. Stefan and Zbigniew apologise for their suspicions, and declare their love for Hanna and Jadwiga. Miecznik gives his blessing to weddings between his daughters and the brothers. Everyone is happy – except for the schemers Czesnikowa, Damazy, and Skoluba.