Anthony Hamilton Hawthorne hits it big in Monte Carlo, winning two million francs. Along with his pal Blake, he gets involved with revolutionaries who want to take over a kingdom - peacefully, or so he thinks. In fact, the rebels want to assassinate the King. Hawthorne falls for the King's daughter, not realizing who she is. Hawthorne is wrongfully arrested for an attempt on the King's life. All works out well in the end, however, as Hawthorne gets the girl and the kingdom is saved.
His is a pleasant little comedy/adventure, with Reid charming and Lila Lee (as the King's daughter) very lovely. Cigar-chomping and blustery Theodore Roberts has a nice bit as a U. S. Senator visiting the kingdom, who tries to help Hawthorne.
Probably the most amusing sequences occur at the end, when the kingdom is turned into a swinging place where everyone speaks American slang.