Kate Humble and her Welsh sheepdog, Teg, continue their journey across the remote Welsh countryside, by exploring mid-Wales. In Ponterwyd, they herd sheep for the market, and Kate witnesses first-hand the price disparities between what farmers get for their sheep and what consumers pay. At the Teifi Pools, she discover that Wales is a world leader in protecting its dark skies. Along the River Elan, Kate gets hooked on fly-fishing and in Llangammarch Wells, Teg has a family reunion, meeting three of her five pups to see if they can earn their Welsh sheepdog credentials.