The life of a St. Louis family in the year before the 1904 St. Louis World's Fair.

When the bride's mother is supposedly swindled out of her money by a spurned suitor, the groom's father orchestrates a scheme of his own to set things right. He is aided by a cabaret singer, while placating a jealous wife.

Two newlyweds spy on the Nazis for the British Secret Service during their honeymoon in Europe.

Dictator Adenoid Hynkel tries to expand his empire while a poor Jewish barber tries to avoid persecution from Hynkel's regime.