Just before the start of World War II, Peggy Davis, a London midwife, has a chance encounter with a stranger that changes her life forever.
When Peggy meets Charles, a wealthy lord as she boards a bus in front of Harrods department store, fate casts them together.
When Charles' wife, Diana, and first child die in childbirth, Peggy, and Charles are thrust into a relationship of happiness, sorrow and unexpected tragedy.
They ultimately marry, have a son and adopt an east end refugee boy from London.
What transpires is a web of family dramas a la Downton Abbey with lesbian relationships, Nazi sympathizers and family secrets revealed as Peggy attempts to navigate through her new life from midwife to lady of the manor.