Edmond the squirrel and Lucy the bear are raised as brother and sister in a majestic chestnut tree, a sort of radiant city in the forest. Play and grow in the heart of nature, answer the enigmas it raises and live adventures in the great outdoors with their family and friends: Edouard, Edmond's dad, Mima the grandmother, Georges Hibou, the mice Polka and Hortense, Mitzi the little bat and the Thing... The good life!