When winter comes it's time for Crumble to hibernate. At least that's what Crumble's always been told. Until one year awaking early, the temptation to go and see what's out there... is too much to resist. And so, leaving the family burrow behind, Crumble begins the adventure of a lifetime. Will there be a way home before the great freeze? Or will Crumble have to stay with new found friends? And why has no one ever said anything about snow?