Sir Chauncey (Richard E. Grant) has managed to climb out of humble circumstances and into the lives of the upper class through his marriage with Lady Savage (Claire Foy), who possesses a title despite her family’s lack of wealth. Having somehow acquired a knighthood, he maintains his position alongside his dependable assistant, Halifax (Jack Farthing), residing in their increasingly dilapidated estate. Then, an unexpected visitor arrives: a summons from the Duke and Duchess of Devonshire. They are touring the countryside and need lodging for the night. Initially, she believes they cannot possibly afford to entertain such important guests, but he insists that they must find a way—even if it means begging or resorting to questionable tactics—to reestablish their place within society. A visit like this could also potentially lead to a beneficial marriage opportunity for their daughter, Fanny (Kila Lord Cassidy), who is preoccupied with mice. Hesitantly, she consents, and with just two weeks remaining until the event, they must prepare both their home and staff. Sir Chauncey’s behavior as he pursues the maid (Bel Powley) is less than honorable, but what he doesn't realize is that she has a relationship of her own and is involved in schemes with a butler who is also assisting his mistress while secretly betraying his employer by selling plots of land to individuals like Mr. Black (Pip Torrens). Amidst widespread illness, deception, and betrayal—and with the local pheasant population at risk—this occasion could either secure his family's legacy or lead to its downfall. The film features a beautiful score and lavish production design, and some lines are genuinely amusing, but it feels stretched out, teetering on the edge of absurdity until the very end, an ending that isn’t particularly surprising. Foy and Farthing don’t have enough to do, and while the movie does offer a diverting critique of 18th-century aristocratic life and its pretensions, I ultimately felt disappointed by this combination of a "Carry On" style comedy with a period piece reminiscent of Peter Greenaway's work.

Source on TMDB