Dougie is in Angus at the Montrose Basin, an important nature reserve that is home to wintering birds. He is on the lookout for waders and wildfowl and finding out why this tidal area is such a mecca for wildlife in winter. Meanwhile, Euan is on the west coast, investigating the risks of locating salmon farms in more exposed sites, while Arlene meets journalist Lesley Riddoch and finds out about her passion for hutting. Anne is following the story of the green and white Scotways signs that point out rights-of-access routes across the Scottish countryside. And in the first of three parts, geographer Professor Hayden Lorimer introduces us to some curious constructions that are overlooked in the landscape.