The title character in Maria Nover (Sister Maria) is played by Eva Szorenyi. A convent-bred lass on the verge of taking her final vows, Maria falls in love with a handsome artist, portrayed by popular operatic baritone Sandor Sved. Due to a silly misunderstanding, she walks out on Sved and marries his best friend Paul Javor. The frustrated suitor quits the art world to become a world-famous concert singer. Years later, he returns to reclaim Maria, only to find that she's not only still a wife, but also a mother and a dedicated nurse. Gracefully bowing out of her life, the Pagliacci-like Sved continues his singing career to assuage his broken heart.

In World War I, two men who look almost identical fight in the same battalion at the front. One of them, Peter Benedek, a landowner, is killed, while István Pongrácz, a mechanical engineer, is hit while wearing Benedek's coat. The severe head injury causes temporary amnesia, and Pongrácz is mistakenly sent to the Benedek estate. Mrs. Benedek is pleased to see that her card-playing husband has become a solid, hard-working man after his wound. But Pongrácz begins to remember...

In a small town in the countryside, the election of the president of the restaurant trade association is under way. The two rivals, Dénes Kövi, owner of the elegant Korona restaurant, and Antal Bálint, owner of the staid Makkhetes restaurant, are putting all their eggs in the basket for the title. Taking advantage of this situation, Pál Balázs, who has become the manager of his crippled painter friend, has a portrait commissioned with Dénes Kövi.

After a heart attack, landowner Ferdinand Kerekházy summons his son Ferko Kerekházy from abroad, who, to his conservative father's dismay, sends a wagonload of machines ahead to set up an irrigation system and turn the saline, barely productive fields into fertile ones. The old count doesn't want to hear about his son's plans, and wants Ferko to marry Baroness Zólyomi. Since his son refuses, he disowns him. With persistent work, and the support of the mayor and a young engineer from Pest, the irrigation plan is realized. When the old count, who is always dreaming of grandchildren, realises that his son and the mayor's daughter have fallen in love, he reconciles with Ferko and asks her to marry him.