I'm a bit foggy on the details, but it goes something like this:
It's about the daughter of a chauffeur (father, mother is deceased) who has just come home from college and has fallen in love with the son of the family her father works for. The suitors of the guy she is interested in look down on her because she is a commoner and that her father is merely a chaffeur. Though at the end of the movie, her father reveals that he had been investing money like his employer and is, in fact, a millionaire. He then marries the cook.