Paula's irresponsible sister Clarice returns home from Mardi Gras, announcing she's gotten married to a gigolo, Stephen Cormack. Clarice's marriage is invalid, but Cormack has skipped the country. Paula is approached by Cormack's lawyer, who mistakenly believes Paula is Clarice, and offers her $5000 to annul the marriage. Paula's lawyer convinces her to pretend to be Cormack's husband until the marriage can be annulled.
Lady Behave!
Paula's world is turned upside down when her sister Clarice returns from Mardi Gras, inebriated and proudly announcing a sudden marriage, sending Paula into a state of panic and concern.