An ex-military accountant is recruited by the FBI to infiltrate the mob in Chicago in an attempt to break open the rackets. To complicate his job, two women stand in his way, each with their own agenda.

Promoter William Montague wants to buy the estate owned by the Daceys, Mrs. Dacey and her daughter Ena and son Todd, in order to build a resort hotel. When they turn him down, he produces a couple of distant relatives, Janice and Robert Clayton, and sets about to prove that the estate rightfully belongs to them. The identity of the rightful heirs is thought to be buried in a sunken ship off of the Jamaican shore and the search begins, led by a schooner skipper, Patrick Fairlie, who is in love with Ena.

Jack Straw (Warwick) is an iceman who becomes a waiter to be closer to the girl (McComas) he is interested in. Later, to impress her, he impersonates an Archduke from Pomerania. A Count from Pomerania (Brower) who is the ambassador arrives and learns of the long-missing son of royalty. The girl's mother (Ashton) learns of the trick being played by Jack. Just when Jack is exposed as being a fraud, it turns out that he is the genuine article.

Lenora, caught in Spanish-Dutch conflict, becomes a spy, initially against the Dutch for her Spanish lover Ramón, but after his death, switches allegiance, helps the Dutch capture a fortress, and is reunited with her beloved Mark, a Dutch commander, realizing the justness of their cause and finding love.

Felix, the King of Wallonia, has to marry Louise, Princess of the neighboring State of Trebizond. The old Prince, her father, craves the elixir of youth, and gets drunk so often that Trebizond is in bad shape. Thus, it is up to Felix to be King of both States. But Louise has a love affair with Stepan, the heir presumptive to his throne, and Felix flees to America in disguise. By a strange twist of circumstance he takes a job as butler in the home of J.P. Morton, multi-millionaire. There he meets Marcia, Morton's daughter, and the jig is up. He loves her.