Crown Prince of the Republic (Russian: Наследный принц Республики) is a 1934 Soviet comedy film directed by Eduard Ioganson.
When the wife, Natasha, becomes pregnant and joyfully announces it to her husband, Sergey, his reaction is one of upset, leading to a dramatic shift in their lives.
Sergey leaves Natasha and moves in with a group of young architects who occupy one of the rooms in a large house.
Due to a series of unforeseen events, Sergey discovers that the baby found by one of the housemates is his own newborn son.
With the caring involvement of many people, the grief-stricken Natasha eventually finds her lost baby, who is named by the kind-hearted doctor as the hereditary prince of the Republic.