Summer 1974: and four friends have planned a weekend hiking and camping in the remote forests of northern Europe. At an innocuous truck stop they pick up an anxious-looking hitchhiker. Almost instantly, it's clear that she's more than simply unnerved. She's terrified of something... or someone. Without warning the group is brutally ambushed and when the survivors come too, deep in the secluded forest, miles from civilisation the first thing they hear is the sound of a hunting horn. Their nightmare is far from over. In fact it has only just begun. The game is on and they realise to their absolute horror that they are the prey.