On the street, a stranger calls out to Brad and declares that he is Peter, Brad's long-lost younger brother. This person provides compelling evidence that he is telling the truth. Gradually, Brad gets used to this idea and accepts his new brother into the family, breaking the old rule: “Never talk to strangers.” But during a foray into the mountains, Peter pushes Brad off a cliff. Having managed to survive, Brad returns home to find that his wife and son are missing. Who is this man? What does he need? And what are the reasons for his terrible revenge?