A group of young men dare a classmate to reach the porch of a legendary old house, said to be haunted by the thirteen victims of a family massacre. In hopes of making a viral video they arm him with a video camera to prove he was there or to capture him fleeing in terror before even reaching the house, as others have. When he doesnt return, the guys must go in to get him. Inside they discover the truth about the house, the fate of their friend and their own fate as well.扬琴家族齐聚北京扬琴是击弦类乐器，4000多年前起源于古波斯，明朝末年传入中国，并本土化为中国民族乐器，成为琴书、说唱、戏曲表演中常见的伴奏乐器。