Susan heads behind the scenes at the famed Gretna Green, the UK's wedding capital, and uncovers the secrets of weddings past. She then follows the course of the world famous River Tweed, trying her hand at flyfishing as she goes, before meeting the weavers at the last commercial handwoven tartan mill in the world. It's there Susan discovers that her own ancestors would have needed quite a large wardrobe for all of the tartans to which the Calmans can lay claim. Finally, the comedian learns the secrets of sheep herding from a border collie