Gone are the wild grasses and rolling meadows. Gone too are the towering trees—except in one last forest in a forgotten corner of the world. Until something totally unexpected, remarkable, frightening begins to happen… The forest begins to grow. And grow. And grow. Mother Nature is back with a vengeance and mankind's very survival is at stake.

Now a crusade of unlikely allies is venturing boldy to the heart of this dark and majestic world to learn its awesome secret—only to make the most breathtaking discovery of all.