Roberta is a bored suburban housewife who is fascinated with a woman, Susan, she only knows about by reading messages to and from her in the personals section of the newspaper. This fascination reaches a peak when an ad with the headline "Desperately Seeking Susan" proposes a rendezvous. Roberta goes too, and in a series of events involving amnesia and mistaken identity, steps into Susan's life.

A sacked maid and butler kidnap a pampered dog and want $20,000 ransom from the rich owner, Lila Manchester. A shaggy dog named Boomer helps save it and becomes a member of the family who originally found him.

This follow-up to "The Bastard" and "The Rebels" continues the account of Philip Kent's life and career from his emigration to colonial Massachusetts through the American Revolutionary War and concludes the family saga with the story of his two sons and their children as they arrive in the unexplored Northwest Territory. (Episodes 5 and 6 of the Kent Chronicles miniseries.)

Two attractive divorcees find that their newly realized independence continues to be guided by their respective parental obligations.