Two young polar bears, Little Bear and Little Bear, embark on an epic journey in search of food and a way home in an Arctic in crisis due to global warming. During a fishing trip, Little Bear is separated from her brother due to melting ice. Desperate, Little Bear meets Snow Eater, an enigmatic salesman who promises to help him, but has dark ulterior motives: he wants to turn the glacial kingdom into a playground called Frostyland. Meanwhile, Little Bear is saved by the Ice Queen, a stern but protective entity who guards the mountain's fragile balance. When Little Bear, tricked by Snow Eater, clashes with the Queen, hidden truths emerge: only the pure singing of the two bears can heal the Ice Mountain, severely wounded by pollution and man's greed. With the help of unlikely allies, including Quantosonofico, a bungling but well-meaning tourist, and the faithful Walrus, the little brothers are reunited. United, they sing to the Mountain, restoring peace and saving their fragile ecosystem. Snow-Eater, defeated, is forced to clean up the damage caused by his greed.
The work closes with a message of hope and responsibility: harmony between man, nature and animals is only possible through respect and cooperation.