Something deep in the jungle has gone silent... Eli and Scout find themselves in a dense, tangled rain forest where the plants have stopped blooming and the animals have grown restless. Guided by a wise old monkey and a glowing compass, they discover that the jungle's lifeblood—its heart—is no longer beating. To save the forest, they must uncover the source of the problem and bring back the wild before it fades away forever. But as the jungle begins to heal, Eli discovers something incredible: A glowing green gem pulsing with ancient energy— the first piece of a much greater mystery yet to come.