It's 1919 and as the family gathers at Rose's funeral, a grief-stricken Harry wonders how he will ever get by without his beloved wife. However, nine months later and the Selfridges are in high spirits - Rosalie is marrying renowned Russian aviator Serge De Bolotoff. At the forefront of the lavish wedding is Russian emigre Princess Marie, the glamorous mother of the groom, but what is she hiding? Agnes is overjoyed to be reunited with Henri, who has recently returned from the war.