A domestically raised chipmunk, Glikko, befriends a carrier pigeon named Pippo (pee-poh), who tells Glikko of an enormous forest where chipmunks roam free. Enthralled by the story, Glikko leaves his home in the city and sister in search of the Vast North Forest. Along the way he meets up with another chipmunk named Nono, whom Glikko reluctantly allows to accompany him. On their journey they are faced with dangers such as predators and the Winter climate.