Gillian and Robbie grow closer while Alan calls the wedding off, in an emotional conclusion to the series. But can Celia rise to the occasion, face her demons and get Alan back?

Alan finds it hard to choose his best man. Caroline and Gillian discover they were born on the same day. Their respective birthday celebrations descend into emotional chaos when Caroline and Kate are outed by John.

Caroline and Gillian become unexpectedly close when Alan and Celia go missing all night during a thunderstorm. Robbie does what he can to help find them, and John finds out that Caroline's been seeing someone else.

Celia and Alan's search for a wedding venue leaves them trapped in a haunted medieval mansion. Caroline and John have a spectacular fight in the garden, and Raff moves out of the farm and Paul moves in.

Celia and Alan decide to buy an extravagant sports car instead of an engagement ring. They throw an engagement party at the farm, which descends into chaos for both families.

Alan and Celia, both widowed and in their seventies, rekindle a passionate relationship that fate stole from them over sixty years ago. But how will their respective families like it?