剧情介绍
讲述安雅和五个朋友一起在旅途研究远古岩画，去深山探险，他们到了一个森林后发现有一些原始的野蛮动物，并且他们相继被被感染怪异病毒，变异成怪物去袭击同伴，在逃亡中，令人感到悬念重重，疑问种种！谁也不知道这到底是什么原因？谁也不知道哪里会发生恐怖和袭击，更没有人知道哪里才是安全的，幸存者在一个个的减少，他们可以逃出生天，绝处逢生吗？Anja and five friends join anthropology student Dace on a journey to study a remote ancient rock painting. Their excitement vanishes when Mel becomes delirious after skinny-dipping in the waterhole. Feverish bleeding confused she physically and mentally regresses to a vicious predatory state. Mel has gone primal. Mels lover and friends realize they are the prey as she savagely hunts them down. Before they can escape another one of them starts to regress posing a hideous choice kill their friends or be killed by them. Their only hope of survival is through a cave where Anja learns too late the meaning of the ancient rock art they came to study.