Dougie is at Scotland's most southerly point, the Mull of Galloway lighthouse, for a special episode all about Galloway. He finds out about a bid to make the area Scotland's next national park and hears from those both for and against it. Meanwhile, Arlene heads to the hills with the local mountain rescue team and discovers that they are not to be underestimated. Anne investigates the rising value of upland farm land and the impact it's having on local people, and Cammy meets the mobile cattle hoof trimmer who has become a huge hit on social media.