Preparations are underway for Lady Ludlow's annual garden party, and emotions are running high in Cranford. Mrs Forrester is sent into a fluster when her beloved cow, Bessie, goes missing, and Caroline Tomkinson is very taken with the winsome Dr Harrison. A visitor brings hope and joy to Jessie Brown, while Miss Matty is shaken by an unexpected encounter with an old friend. But when a spot of eavesdropping unveils some startling news, it seems that Cranford is about to change forever...