In 1991, Chester and Beatrice, elderly twins with a tentative grasp on reality, manage to lure Queen Elizabeth II to their home in the British countryside in a misguided attempt to have her knight their beloved younger brother, Martin.

When the Queen threatens to prosecute the twins as criminals, what started off as a well-intentioned pipe dream turns into a full-blown kidnapping as Martin locks the Queen in their parlour until she promises not to press charges. Martin and her Majesty engage in a battle of wills as Scotland Yard and the local constable, who also happens to be Martin's fiancée, close in. 

The Queen is in the Parlour is a brisk, heartfelt comedy that asks what duty one owes to family, what bonds tie ruler to subject, and why we put little pieces of paper between slices of cheese.