Pearl Street in Liverpool has already seen its share of drama and tragedy in the opening years of the war, but as the residents prepare for Christmas 1942, its spirit and friendship in adversity binds them closely together. Eileen is worried about the growing distance between herself and her RAF husband since he was seriously injured. Why does Nick find every excuse to stay in London on his weekends off, not returning to his loving wife and gorgeous little boy in Liverpool? Lena Newton has longed for a baby of her own, but, with her husband posted overseas with the Navy, it's looking unlikely. Lena's lonely days are brightened by visits to the cinema with her neighbor, Mr. Ransome, until a familiar face returns to Pearl Street. . . Since she discovered her American lover was already married, Kitty has hidden away, too ashamed to return to Pearl Street in disgrace with her baby. Finally facing her fears—and her old friends and neighbors—Kitty learns that life has one more surprise in store for her. As the final years of the war are played out, Pearl Street sees friendships forged, hearts broken, babies born, and the most joyful of reunions. Once again this small Liverpool street is brought to life, where everyone has a key on a string in their letter box, in case a friend is in need.