Klei the little fox (voiced by Stênio Garcia) is an envoy from the Sun Kingdom, tasked with finding the legendary fairy power. In the ancient forest, Klei meets Bruno the little bear, who is also an envoy. At first, they see each other as competitors and are wary of one another, but after experiencing several dangers and unexpected events, Bruno and Klei gradually let down their guard and forge a deep friendship. The world beyond the forest has already been occupied by warlike giants, and now, the giants’ invasive claws are reaching toward the ancient forest. The only hope to save the forest lies in the powerful fairy energy. Finally, from a giant bird, Bruno and Klei obtain clues about the fairy power—just as the giants are preparing to completely destroy the ancient forest.