Four girls join the Women's Land Army: patriotic Joyce wants to 'do her bit', argumentative Nancy is there under protest, and sensible Annie joins so that her younger sister Bea can escape her abusive father. But Bea rebels against her sister's control and finds herself enthralled by a charming GI, Cal Gillespie; while at the dance, Nancy tries to get closer to Lord Hoxley.

Bea has been hiding her pregnancy from everyone for three months, but it is becoming increasingly difficult. Tucker is on the prowl for enemy sympathizers and Nancy is in his sights. Farmer Finch gets involved in a scam to flog homemade carrot whiskey, while Lord Hoxley realizes that his marriage is over, driving him into the arms of Nancy. Annie receives some devastating news.

Three months later, Annie is not dealing very well with Harry's death. Nancy and Lawrence's attraction has blossomed into a full-blown affair. Meanwhile, Esther is screening Nancy's letters, fearing that she might be a Nazi collaborator. Joyce, the patriot, faces a dilemma--should she shelter her deserter husband or turn him in?

Farmer Finch hires some trekkers, families displaced by the bombing, as cheap labor, but when there is a break-in at the manor house, Lady Hoxley orders Finch to get rid of them all. The Hoxleys hold a swanky party, but after clashing with Nancy over a visit to her husband John, Joyce tells Lady Hoxley about the affair. Billy finally proposes to Bea, but she goes into labor before she can answer.

Bea prepares for her wedding and discovers that Finch has doubts about her motives. Determined to leave, Nancy is shocked to the core when Ellen reveals Lawrence's dark secret. Will Annie choose her duty to Harry, or her love for Adam? Meanwhile, Tucker sets out on a trail of murderous revenge that will have shocking consequences for Nancy, Annie, Bea and Joyce.

New girl Connie looks set to cause trouble on the farm. This is bad news for Bea, as her husband is on Connie's radar. Finch is forced to enter his pet pig into the county show for if he can win, the pig would be exempt from slaughter.