Alf and Ivy are settled into their new jobs but things soon hot up when Sir Ralph suspects that his wife, Lady Agatha, is having an affair. Lord Meldrum's car is vandalised – someone has daubed the word "fornicator" on the side which causes a panic when the Bishop wants to use the vehicle.

Lord Meldrum thinks that Lavender has gone too far and wants her declared mentally unstable, whilst Teddy is determined to pay Ivy a visit in her room no matter how dangerous the route. A party, thrown for Miss Cissy's birthday, brings a few surprises.