Leocadia Gardi is dead but her ghost haunts Prince Albert. He has been struggling to keep her memory abetted by his aunt, the Duchess. The latter has designs on a young milliner called Amanda who bears a striking resemblance to the dead woman. The Duchess prevails upon Amanda to impersonate Leocadia, but the plot is discovered by Albert whose anger turns to fascination at the strong resemblance. It is not easy, however, to impersonate someone as bizarre so a crisis is reached when they realize their love for each other and Prince Albert resists the treachery to his memories. After a quarrel they part, but the Duchess, recognizing that in Amanda's love lies his salvation, encourages her to lay the ghost of Leocadia, and win her prince. This she does with tenderness and gentle perseverance.