Jo and Cathy venture into squelchy upland territory in search of sphagnum moss, a key species of the peat bog. Discovering that a third of the UK was once bog or fenland, and that most has now been degraded, they find out what needs to be done to restore these watery wonderlands and their carbon capturing powers. Up in Galloway they meet environmental artist Kerry Morrison and learn all about a tasty project which reconnects a local community with their peatlands.