1939, London: From McPhail's Passage to Kensington's Grand Palace Hotel, Rose Dunbar is evacuated from her humble home on the Rock of Gibraltar and dropped into a chaotic city of falling bombs, perplexing class rules and bad weather. Despite being 'flagrantly foreign' to the locals, she becomes an efficient go-between for the upper-class ladies helping out with the war effort and her own tribe of noisy displaced families.