Primordial nature runs amuck in this expertly-played slice of neo-Ozploitation from Australian director Josh Reed. The film follows six friends on a field trip who set up camp in the remote wilderness of Australia. When one person takes a late-night skinny dip in a nearby waterhole, she becomes incredibly feverish and agitated, and soon regresses to a crazed predatory state in which her companions suddenly become the hunted. When another begins the same beastly transition, terror descends on the remainder as they realize it’s now kill or be killed. A frenzied visceral nightmare in the vein of Cbin Fever, Primal is a hugely enjoyable rollercoaster ride through primitive panic.