During driving through the Pacific Northwest, their car breaks down in a mysterious area of the forest. Now, Ashley and Max have to face against the dangers of nature to survive. Also they exposed to a serious danger when a monstrous creature, known as Oh-Mah, appeared.
As civilisation fast gives way to the wilderness, Primal Rage becomes ever more brutal and gory, while introducing some witchy, peyote-inflected Native mysticism that never quite fits the rest of the film's tone.