Five strangers - newlywed serial killers, a suicidal cop, and two runaways - become suspect and victim when a masked murderer makes its presence known in an isolated mountain town.。男主齐云是一个程序员上班族，在回家过年的时候，被太爷快递送过来一个造型奇特的指南针，并说这个指南针能预测生死危机。齐云本来不信，但很快村口超市的老板便因为被指南针指着，很快触电出事，最终抢救无效死亡...。