The film follows Rajendra Singh, an Indian government official gone rogue, on a 40-day pilgrimage down India’s once pristine Ganges river. Across the globe in northern Canada, Eriel Deranger mounts her own “David and Goliath” struggle against the world’s largest industrial development, the Tar Sands, an oil deposit larger than the state of Florida. And in Australia, inventor and entrepreneur Jay Harman searches for investors willing to risk millions on his conviction that nature’s own systems hold the key to our world’s ecological problems