The Caucasian war is over and the soldiers are returning home. The Lady, Lidia Szeffer, decides to organize a ceremonial party in honor of the heroes. Meanwhile, Mrs. Czerwińska is very worried that her son, who was also at the war, did not give a sign of life. To chase away the black thoughts of his wife, Mr. Czerwiński invites guests to Mr. Doroszenko with his daughter Natalia. Delighted by Katierina's musical talent, Natalia invites her to her home, where the girls are to practice a new fashionable romance. Finally, the son of Czerwiński finally returns to the house, Grigory. Katierina attracts his attention from the spot.