Plot: Nick Nairn and the team continue their weekly quest to get into the heart of the Countryside to find out what makes rural Scotland tick. Sarah discovers why Aspen trees face a lonely future if they can't spice up their love lives, Nick meets a specialist haggis-maker in the borders, and Euan finds out how a charity on Deeside rescues horses from cruelty and neglect, and offers them a second chance at life