Three tiny, ancient beings - Moss, Burnet and Cumulus, once revered as Guardians of the Wild World - wake from winter hibernation in their beloved ash tree home. When it is destroyed, they set off on an adventure to find more of their kind, a journey which takes them first into the deep countryside and then the heart of a city. Helped along the way by birds and animals, the trio search for a way to survive and thrive in a precious yet disappearing world ...

The breathtaking children's debut from acclaimed nature writer and literary fiction novelist, Melissa Harrison, author of All Among the Barley and At Hawthorn Time: shortlisted for the Costa Book Award and longlisted for the Baileys Prize. Inspired by 1942 classic The Little Grey Men by BB, with shades of The Borrowers. A tale of disappearing wilderness that couldn't be more relevant in today's environmental crisis, brought to life for children by three tiny, funny, eternal beings - the hidden folk.