Three small-town girls -- Flossie Payne, a giantess; Hope Durant, a seamstress, and Sally Roxford, a schoolteacher -- win a trip to Monte Carlo, Monaco, sponsored by their local newspaper, with Bancroft, the star reporter, as their guide. Tony Townsend, an American who has been evicted from numerous hotels in Monte Carlo for failure to pay bills, registers at the same hotel as Sally and accidentally meets her while evading detectives on a balcony. Tony borrows the uniform of a Prince Boris, which he finds in an adjoining suite, and is mistaken for the prince. At a fashion show that night, Sally models for Pierre, a great designer, and Tony becomes enamored of her, while Flossie mistakes the doorman for a duke and Hope mistakes a waiter for a count. Following his escape from anarchists, Tony declares his love for Sally and is jailed as an imposter. However, he is released through the intervention of the real prince and leaves for America with Sally.