You'll believe it when you see it. The government says there's nothing to worry about, it's just a problem with bears making trouble in the mountains and forests of Norway. But local hunters don't believe it and neither do a trio of college students who want to find out the truth. Armed with a video camera, they trail a mysterious "poacher," who wants nothing to do with them. But their persistence lands them straight in the path of the objects of his pursuits: Trolls. They soon find themselves documenting every move of this grizzled, unlikely hero the Troll Hunter, risking their lives to uncover the secrets of creatures only thought to exist in fairy tales.