For the last stage of Tim and Pru's canal odyssey, they head to France's burgundy wine region to visit the Canal du Nivernais, which runs through some of the most picturesque scenery in northern France, passing towns and villages steeped in medieval history. The canal was critical in helping to ship wine north from the vineyards to Paris and beyond. The journey is a gastronomic pleasure trip for Tim and Pru. They visit the market at Chablis and help out at the annual grape harvest. They visit their youngest son, Joe and the medieval city of Auxerre; and also reflect on what the journey has meant for them as a couple.