 On a visit to a spa in the Ruritanian Kingdom of Tyronia, American financier Richard Gresham meets the country s ruler, King Anatol XII, and convinces him that he could arrange for a $50 million dollars in loans to benefit his impoverished nation if the king s charming daughter could do the appropriate public relations in the States. Unfortunately the Princess Catterina falls ill and is quarantined for a month aboard ship. Rather than risk losing the loan, Gresham hires out-of-work lookalike actress Nancy Lane to impersonate Catterina. Complications arise when she falls in love with investigative newsman Porter Madison, who is investigating Nancy Lane s disappearance, and she must precariously balance playing both parts convincingly with the loan and her emotions at stake.