Elizabeth returns home with her newborn daughter, Lucy, and the very disagreeable and old Nanny Webster, to look after "Baby".

The Bellamys are in shock when they learn that Eaton Place, which is part of the Southwold estate, must be sold in order to satisfy the terms of the deceased Lord Southwold's will. Adding to their worries is news of Elizabeth's involvement with Julius Karekin, a man they strongly disapprove of, but in the end, the relationship proves very beneficial.

Sarah is pregnant with Watkins' baby and Lady Marjorie has run out of patience with both of them.

News of the Titanic disaster arrives at Eaton Place, and the entire household anxiously await word of Lady Marjorie's fate.

Richard Bellamy, who has been in considerable financial distress since the death of Lady Marjorie, finds himself at the center of a insider trading firestorm in his capacity as a member of Parliament.

It's Christmas 1913 and two young ladies, one from upstairs and the new parlor maid, conspire to spread holiday cheer to the less fortunate.

While running an ordinary errand, Rose's life takes an extraordinary turn.

Edward and Daisy marry before he's sent to France and Georgina becomes a volunteer nurse. Ruby surprises everyone with a surprise announcement.

Grasping at straws, the Bellamy family continue to search for any information to indicate James is still alive, but when Trooper Frederick Norton, James' servant, arrives to deliver James' personal belongings, Hazel loses all hope.

Rose receives excellent news, James is depressed about his slow recovery, Richard is courting Virginia, and the Great War is winding down to a victorious conclusion, but there's still one more casualty to be claimed.

As Britain tries to rebound from the war, James Bellamy runs for political office. Edward and Daisy are struggling financially but realize they have friends who love them at Eaton Place.

Spring 1922: When William goes off to Prep School, Rose gets Alice a new puppy so she won't be lonely, but when Richard and Virginia go on holiday and leave Miss Treadwell in charge, the entire staff lines up against her when she tries to dispose of the "filthy creature".

(Audio commentary available on some DVDs). An influential industrialist showers attention on Virginia, and there's another member of the household being courted—Ruby.

Frederick considers his future when he feels his talents are largely wasted in the Bellamy household.