Documentary exploring Britain's oldest and most exclusive Gypsy gathering, the Appleby Horse Fair in Cumbria, which is attended by more than 10,000 travellers. The programme explores how new police restrictions are impacting on the festival's traditions, as well as the disruption caused by torrential rain, including a nearby river rising to a dangerous level. Plus, local business owners share their thoughts on the event. While some stand to make a profit from the visitors, others find the size of the fair overwhelming.