While hiking in an isolated forest, survivalist Danny Coile (Les Stroud) and old Army buddy Arron James (Stacy Brown Jr.) become hopelessly trapped when they fall into a deep dark cenote with steep walls and no way out. Over the next 85 five days, they transform from mild-mannered old friends into vicious, bloodthirsty animals willing to do whatever it takes to survive.

Does the Skunk Ape exist? This is the question researcher Stacy Brown Jr. poses to you, presenting you with the best historical accounts, eyewitness testimonies and evidence that he has collected throughout the first eight years of his journey.