Joe Crowley and Ellie Harrison are in Cornwall, exploring the fishing port of Newlyn and its remarkable secret history. Joe also discovers the fishy equivalent of ‘nose to tail' eating, while Ellie finds out how the area is reeling from the 2021 staycation invasion. As global climate change talks get underway, Tom Heap investigates the threat posed by rising sea levels here in the UK. And on his farm, Adam Henson has some new arrivals - but will they all be delivered safely?