As summer arrives in Snowdonia, it’s time for the farmers to gather their sheep off the mountain slopes ready for shearing. With a lot of livestock to round up and much ground to cover, a team of good dogs and good shepherds is vital. Ken and Lisa Markham leave their own farm behind to help Ken’s cousin Wil gather his sheep as they do every year - a favour that will be returned later in the season. It’s wild and rugged terrain, too steep for quad bikes, so the only way to round up the flock is on foot with a gang of sheepdogs.