A witty script-reader living in New York stumbles upon a captivating ad in the Saturday Review of Literature, promoting a London bookstore that offers mail order. Intrigued, she reaches out to Frank Doel, a charming bookseller at Marks & Co., located at 84 Charing Cross Road. Their exchange blossoms into a heartfelt and enduring friendship, transcending the Atlantic and spanning years of shared literary passions and personal stories, all while exploring the profound impact of books and connection.