特种女兵布伦纳·贝克和伴侣迪伦在亚拉巴马州的荒山野林里徒步旅行，误入黑帮毒贩的老巢。迪伦被残忍杀害，布伦纳有幸逃生。这群残暴的毒贩没有想到的是，布伦纳作为美国陆军第75游骑兵部队的第一中尉，誓让他们所有人血债血偿。

Twenty years ago at the infamous Redwood Farm, the owner went mad and killed his family and himself. Shrouded in urban legend ever since, a stranger obsessed with the unsolved Redwood murders convinces a group of bereaved family members to venture into the wilderness in the hope of proving the existence of the notoriou…