Lily-Rose and friends travel Great Britain in a green hot-air balloon hearing stories from children. The Green Team are learning about hibernation and Jay is finding out if birds hibernate. Ant looks at hibernating insects and makes a bug box for minibeasts to sleep in over the winter. Lily-Rose is looking at how her seeds do in winter, while Cat finds the champion hibernator of them all - the dormouse. Also, Jelly and her friends call in on some hedghogs getting ready for winter at St Tiggywinkles and there is a special guest appearance from Justin as a Green Balloon Club member helps his tortoise get ready to hibernate.