When the 102-year-old vicar of Dibley dies, the villagers eagerly await his replacement. To their shock, the replacement vicar is a woman. While David Horton tries to have her removed, the other villagers grow to love their new vicar.

The Songs of Praise team come to Dibley to film in St. Barnabas' Church. The townsfolk all want to be involved, while Geraldine falls for the show's producer Tristan Campbell (played by Peter Capaldi), and David, meanwhile, becomes enamoured of Ruth, the camera operator. However, on the evening filming is wrapped, Geraldine and David are heartbroken to discover that Tristan and Ruth are in a relationship. Guest starring Pam Rhodes as herself.

David stands for re-election to the local council, but faces competition when the villagers declare that they want the vicar to run. She agrees not to stand as long as David makes a few election promises. Featuring the voice of Alistair McGowan.

As Easter comes to Dibley, each council member gives up something for Lent: Geraldine gives up chocolate, David stops being unpleasant, Hugo forgoes lustful thoughts, Owen stops swearing, Letitia stops "cooking garbage", Frank stops being tiresome and Jim stops dithering. Sadness later comes to Dibley when Letitia dies, and Geraldine promises to take over her role as the Dibley Easter Bunny, which involves dressing up in a rabbit costume.

When Geraldine is invited to four separate Christmas dinners, she does not have the heart to refuse any so goes to all four. On Christmas night she is visited by Songs of Praise producer ya Tristan Campbell, who asks her to marry him. Geraldine is overwhelmed until he introduces his fiancée (played by Orla Brady), and it becomes apparent that he wants her to conduct his wedding. Guest starring Mel Giedroyc as Alice's sister and Carol MacReady as Alice's mother.

Alice and Hugo are married, with Jim as best man and children dressed as Teletubbies. Meanwhile, Geraldine is attracted to David's brother from Liverpool, Simon (played by Clive Mantle). During her hen night, Alice also reveals the shocking identity of her biological father. Guest starring Geraldine McNulty.

Hugo and Alice return from their honeymoon, and Alice is pregnant. Meanwhile, David's brother Simon (played by Clive Mantle) returns, and he and Geraldine begin a passionate relationship. However, when he says he is seeing another woman back in Liverpool, she is so devastated that she refuses to attend any services and offers her resignation.

It is Geraldine's 10th Christmas in Dibley, and to celebrate they hold a competition to see who can write the best Christmas carol. Meanwhile, at a party to celebrate her anniversary, David invites the Archbishop of Canterbury, Rowan Williams (played by Brian Perkins). Also, Alice and Geraldine discuss who they would want to sleep with if they were gay, and Alice then informs the parish council that Geraldine is gay when she sees a nearly naked Rachel Hunter in the vicarage. After her anniversary party goes terribly wrong, Geraldine drinks three bottles of wine before midnight mass.

The villagers want to celebrate Geraldine's 40th birthday, so they buy her a ticket to a speed dating evening. However, when she goes it turns out that most of the dates are the other villagers. When Geraldine leaves without a date, Hugo offers to sleep with her and impregnate her so she can have a baby, revealing that he and Alice now have ten children. Meanwhile, Geraldine is trying to get the villagers enthusiastic about the 20th anniversary of Live Aid and encourages them to write to the Prime Minister about the Make Poverty History campaign. However, when they show no interest, she shows them a short video depicting two poverty-stricken children, and the episode concludes with all of them wearing armbands in support of the campaign. Guest starring Miranda Hart, Nathalie Cox and Cristian Solimeno as organiser and participants in the speed dating respectively.

Concerned that Dibley is losing its community feel, Geraldine starts an art class and a book club. Neither are very successful as everyone gets distracted by the life model and nobody is interested in the book. After reading The Da Vinci Code, Alice thinks that as her name rhymes with "chalice" she must be descended from Jesus.

Having officiated at 100 weddings, Geraldine is excited to finally be the bride. Fiancé Harry sensitively leaves her alone to research dresses, but the parishioners invade, taking over all the organisation as a thank you gift for Geraldine's decade of friendship. Hugo presents a disastrous This Is Your Life, but the evening is saved when a power cut gives the group opportunity to simply chat and show their appreciation for each other.

Before the wedding, Owen, Jim and Rev Jeremy Ogilvy (played by Hugh Bonneville), an old college friend whom Geraldine has chosen to conduct the service, all propose to her. After a number of setbacks, the bride looks beautiful in her white dress until Owen drives the car through a muddy puddle. Geraldine attends the ceremony in her pyjamas - Harry's favourite pair - with Alice dressed as the Tenth Doctor and Daleks bridesmaids. As the newly-married Harry and Geraldine leave the service, she flies up into the sky above Dibley, overcome with joy.