A connoisseur of conning, Lawrence Jamison is running the ultimate royal scam on the Riviera--he's posing as a deposed prince raising funds for the freedom fighters of his stricken homeland. But his "hustling highness" gets royally flushed when a pretender to his throne turns up. He's Freddy Benson, a small-time scam artist who has enough on Jamison to make a mess of the monarchy. So the rivals make a wager--the first to extract $50,000 from the next woman they see, wins. And the loser goes into exile.