Erin Rogers and her daughter Casey have been missing in the Alaskan wilderness for five days. Troy Spencer is determined to find his sister and niece at any cost. Once there, a local tells Troy about a loner, Bishop, a man shrouded in secrets, who may be his only hope.

As Troy sets out to find the mysterious Bishop, Casey is lost in the woods, alone and frightened, seeking help for her gravely injured mother. But she is not alone, something ancient stalks these forested trails, something evil that hungers for fresh blood.

The trio soon finds themselves caught in a struggle against time as an ancient rivalry is renewed.