The story centers around the Trenchard family, an upper-middle-class English family living in London. The central character, Katherine Trenchard, is a young woman who finds herself torn between her duty to her family and her desire for personal happiness and independence. Her family is deeply conservative and bound by societal expectations, which suffocate Katherine's sense of individuality and freedom.Katherine is engaged to a respectable but uninspiring man, John Galleon, largely due to family expectations. However, her encounter with Philip Mark, a more dynamic and unconventional figure, awakens in her a longing for something beyond the stifling conformity of her life. The novel's tension arises from Katherine's internal conflict as she struggles between her sense of duty and the pull of her personal desires.