Francis Hallé is a French botanist who has spent his life exploring, studying and marveling at the great tropical forests of the world. He laments the destruction and loss of the forests and, in this richly crafted film, narrates his vision of what will happen when the forests reverse the effects of man’s onslaught. Bringing to bear Halle’s deep knowledge, insight and feeling, filmmaker Luc Jacquet (March of the Penguins) suffuses the botanist’s vision with arresting images — both real and imagined — of nature’s irrepressible force and ceaseless interconnectivity.