When a cunning murderer vanishes into the rugged mountains of the Pacific Northwest, pursuing FBI agent Warren Stantin must exchange familiar city streets for unknown wilderness trails. Completely out of his element, Stantin is forced to enlist the aid of expert tracker Jonathan Knox. It's a turbulent yet vital relationship they must maintain in order to survive... and one that becomes increasingly desperate when Knox's girlfriend Sarah becomes the killer's latest hostage! An F.B.I. Agent teams up with a tracker to pursue a murderer after he vanishes into the mountains and infiltrates a hiking group.