Mirtilla, the Amorous Jilt, who had once been attached to George Marteen, the Younger Brother, married for a convenience the clownish Sir Morgan Blunder. Prince Frederick, who had seen and fallen in love with her during a religious ceremony in a Ghent convent, follows her to England. They meet accidentally and she promises him a private interview. George Marteen had recommended a page to Mirtilla, and the lad is his sister Olivia in disguise. Mirtilla, although she falls in love with her 'smooth-chin'd boy', receives Prince Frederick, but the house wherein she lodges catches fire that night, and it is George Marteen who, in spite of the fact that he knows his friend the Prince is with her, procures a ladder and rescues the lady at some danger to himself.