On Chesil Beach is a romantic drama film based on the novel of the same name by Ian McEwan. Anne-Marie Duff plays Marjorie Mayhew, the mother of the male protagonist. The film tells the story of a young couple, Florence and Edward, who are on their honeymoon in 1962. Anne-Marie Duff's character provides insight into Edward's upbringing and family dynamics. On Chesil Beach explores themes of love, intimacy, and societal expectations, offering a poignant and thought-provoking narrative.