Dougie finds out how Scotland's mountain resorts are preparing for the winter season and what effect climate change is having on business. He looks back to the summer when he encountered some beautiful snow patches that were made last winter. As we confront more imported food post-Brexit, Euan investigates how clear labelling is on Scottish-produced beef. Arlene’s in Argyll to find out how a community is rewilding their sea loch with native oysters. And Professor Hayden Lorimer returns to rediscover another lost construction in the landscape.