Charlotte Smith and Joe Crowley head to south west Wales, where they help with a kelp harvest at Câr-y-Môr, Wales's first regenerative ocean farm. Hauling up metres of seaweed from the dark depths, they meet the people working this harvest from the submarine to the shelf. At Câr-y-Môr's land-based HQ, Joe sees where the seaweed is dried in large polytunnels to be processed as a superfood and provide alternatives to plastics. Charlotte visits a nearby community garden boosting the growth of their plants using a liquid seaweed fertiliser made from Câr-y-Môr's excess crop. The team visit a smallholding in Carmarthenshire, championing Welsh wool, following the journey of wool from fleece to fabric. On the low-lying margins of the Gower Peninsula, brothers Dan and Will Pritchard move their lambs and their mothers out onto a stunning salt marsh landscape. Adam is in the Yorkshire Dales visiting an old friend who has restructured his livestock business to better look after the land while improving the economics of his farm. And Datshiane investigates the problems facing farming families as they switch from claiming tax credits to the Universal Credit system, with some saying the process is hugely stressful and bureaucratic.