Hyacinth is determined to create the perfect impression when inviting the new Vicar for “tea and light refreshments”. However her hopes come crashing down on her when Onslow and Daisy turn up with the news Daddy has been kidnapped by a gypsy. The day gets even worse for the polish-perfecting protagonist when Rose turns up, on her way to her own funeral.
Hyacinth and Richard visit a stately home where the leading lady hopes to meet a member of the aristocratic family. However she fears her social status will be sabotaged by Onslow, Daisy and Rose, who turn up unexpectedly. Thus Hyacinth drags Richard through the ground's private gardens to hide from the lower-class clan.
It is Liz and Hyacinth's day to help Mrs Nugent at the charity shop, and on their way there, Hyacinth has to make a visit to Onslow and Daisy's to remove a woman (played by Gretchen Franklin) from Daddy's room, refusing to leave. Meanwhile Rose intends to give up men, and arrives at the charity shop to donate her raunchy underwear.
Daisy and Onslow’s granddaughter Kylie is getting christened, but Hyacinth is unimpressed because there has not been a wedding first. The day does not get any better for Hyacinth when she and Richard are forced to come to the rescue of the baby's mother Stephanie, whose transport has broken down. The leading lady then learns the baby's mother is a hippie, who is unaware of the baby’s father.
The Major invites the Buckets for a golfing weekend at a luxury hotel. All is well until Onslow and Daisy turn up unexpectedly to collect Rose after she has spent a raunchy weekend away with a Mr Smith. Inevitably, when Hyacinth realises her family are there, she fears for her social standing. Adding to her dilemma is the amorous intentions of the Major.
Hyacinth's brother-in-law Bruce is stuck up a tree, Daddy goes to the register office to be married and Emmett meets Daisy, Onslow and Rose, throwing Hyacinth into dismay. Liz offers to drive Daddy back to Daisy's, but to avoid herself and Emmett seeing how Daisy and Onslow live, Hyacinth insists they stop off at Violet's.
Hyacinth is dreading an invite to Onslow's birthday party, but changes her mind when finding out she and Richard will be picked up by Rose's wealthy Greek boyfriend. Thus Hyacinth holds a gathering at her house to impress the neighbours as she departs in the luxury vehicle. However her hopes die when a hearse arrives instead.
Richard is offered early retirement and so ponders over the possibility of having to spend all day everyday with Hyacinth. Emmett is enraged when Hyacinth ends up rehearsing a performance for the old people at the Church Hall with him, and a tranquilised Rose arrives at the scene wanting to become a nun.
Hyacinth is very excited at the prospect of having her new three piece suite, an exact replica of the one at Sandringham House, delivered. She will also give Daisy and Onslow her old suite, provided they pick it up themselves. But of course these two events are likely to collide at some point, creating an insurmountable disaster.
Hyacinth has bought Richard a Father Christmas outfit for him to wear when distributing gifts to the old people at the Church Hall. Against his will, Richard puts on the outfit, but after having one too many sherries with Emmett, he is unable to fulfil the deed, hence Elizabeth puts on the outfit and pretends to be Richard.
Hyacinth organises a riverside picnic, much to the despair of those invited. Despite Emett's and the Vicar's best efforts to tell Hyacinth they are unable to attend, they find getting out of Hyacinth's function impossible. As always, Hyacinth's plans of perfection are shattered when a digger dumps dirt in her chosen location for the picnic.
For Richard’s birthday Hyacinth buys some skis as she believes they "will look good on the car". However needing Violet and Bruce’s roof rack the Buckets head off to Violet's luxury home, picking two neighbours up along the way. Hyacinth is thrown into a panic when arriving as Violet and Bruce are arguing.
Richard is not looking forward to going to a country house sale with Hyacinth as he believes she will spend beyond their limit. Liz and brother Emmett are also going to the sale, and are devastated when they realise Hyacinth is there. Meanwhile, a Mrs Braddock has commandeered Onslow’s car and is impersonating his dog, which has gone missing.
A ""luxury barbecue"" at Violet's house looks like being a disaster because Bruce and Violet keep having violent arguments. Hyacinth organises a sing song in an attempt to take everyone's mind off their hosts' battle. Later, Hyacinth goes along to a rehearsal of ""The Boy Friend"" to offer her services to Emmet.
Hyacinth is completely insulted when she is awarded second prize at the local craft fair, and over Lydia Hawksworth. Scandalized even further when she and Richard are overtaken by Lydia's new car, it isn't long before Richard's worst fears are realized and Hyacinth sets her sights on a newer, more expensive Rolls Royce.
Hyacinth and Richard arrive at the Church hall as Hyacinth organises a Pageant based on the English Civil War, with herself as Queen Henrietta Maria and Richard as Charles I. However all of the volunteers supposedly taking part are unable to make it. At a last minute attempt to get the show off the ground, Hyacinth invites Onslow, Daisy and Rose along with Bruce and Violet to participate. Later in rehearsals however, Hyacinth falls foul of a stage accident.
Daisy and Onslow find the secret diary of Hyacinth and start reading in it. The rest of this TV special are clips from previous episodes.
Pebble Mill interviews Patricia Routledge and Clive Swift