When the Lark Rise school loses its teacher, Emma steps in and discovers a talent she never knew she had. But Margaret also covets the role of schoolteacher, and the two women become rivals for the job.

Over in Candleford, Thomas and Dorcas are at odds. The postman is agitating for better working conditions, and Dorcas isn't taking it well. But when they each learn of the deeper reasons behind their stubbornness, will they be able to put their own needs aside for the sake of their community?

Mischief Night is approaching and the folks of Lark Rise and Candleford are excitedly planning tricks to play on their neighbours. But Laura is in no mood for silly pranks - Fisher Bloom has returned, intent on winning her back, and it has thrown her feelings for Daniel into turmoil.

Pearl and Edmund are determined to protect Daniel and Laura from heartbreak, but will their mischievous tricks to make Fisher leave succeed, and how will Daniel respond to a rival for Laura's affections?