In the Picardy region, Tim and Margreeth, who run their chateau as a B&B, plan to sell 'gite timeshares' and build an upmarket caravan park to grow the business. But first Tim needs to evict a swarm of bees. Near Calais, Nicole and Stephan need income to turn their chateau into a B&B, so they're converting their hall into a tearoom. Alison and Paul have spent nine years renovating their ancient chateau. To give up their professional day jobs, they must increase bookings - so they're creating a 'wedding terrace' around the pool, with an outside kitchen. But there's a leak in the pool and Paul gets distracted by an old motorcycle.

Tim and Margreeth concentrate on renovating the only caravan in their new park and the fire pit that will be its centrepiece. Nicole and Stephan make a drastic decision, and prepare for a party to celebrate the renovation of the main hall. Paul and Alison continue their search for the secret tunnel in their oubliette, and make the final preparations for a wedding, but bad weather throws both tasks into disarray. Stephanie runs music events at her chateau in central France but needs to increase revenue. She's come up with a plan to host singles parties, so she has a trial run with friends and family.