Left behind in a cold and dark burrow, a baby rabbit named Tumkit was destined to die of starvation until Vella, a shrewd and fearless mockingbird, discovered Tumkit and brought him a magic berry. The berry came from a solitary bush that grows in a cave near the top of Laurel Mountain. Vella warns Tumkit the bush is struggling to survive and unless they act quickly the supernatural powers of it's berries will be lost forever. Tumkit, Vella and Sully, a one-year-old buck and loyal friend to Vella, travel up the steep mountain in a desperate attempt to save the bush. Their quest takes a dangerous turn when they encounter Borwong, an angry and heartless grizzly, who refuses to allow anyone on his mountain.