A young couple heads into the Amazonian rain forest on the hike of a lifetime only to end up hopelessly lost, unable to find their way back to civilization. Trapped in the jungle, they must survive the terrors of the Amazon: hungry predators; packs of wild boar; armies of vicious insects; and a constant thirst that they can only satisfy by drinking water from the forest floor. As the days pass, desperation turns to hallucinations and even thoughts of suicide. They must hold onto sanity until they can find their way home.