民国年间， 一个偏远小镇在战乱中艰难维持着安宁，镇上的穷户徐天佑与老母亲相依为命。适逢雷雨，他在村口荒亭避雨，遇到三个诡异男子正守着一个匣子猜拳对赌，言明谁赢了就能独得匣内银钱。徐天佑加入赌局，不料输的人却当场暴毙，徐 天佑才知这是场生死局。此后镇长家中接连有仆人遇害，镇上不断发生诡异之事，探长韩铭与镇长女儿张盼儿携手查案追凶

饿死鬼是佛教语中的六道之一，人在生前做了坏事，死后要进入饿鬼道遭受地狱折磨；很多年前，一位降头师来到荒村借宿，村民无意中发现，降头师正在将老婆的尸体进行献祭复活仪式，村民惊恐之下烧掉了降头师的老婆，于是降头师愤恨的给村子下了最恶毒的降头术——饿鬼降。从此村民再也无法进食，从而互相残杀。据说，成为饿死鬼的人，除非抓到替死鬼，否则永世不得超生。 若干年后，凶宅先生江烁和秦一恒接到了一个神秘的大单，一行人驶向当年的神秘村落。却只看到一个荒废的旅馆，而这个荒村的旅馆却怪事频发，失踪案一个接着一个……

　　A group of tired commuters have caught the last train home, ready to hop into their beds for the night. However, their train soon veers off-course and crashes into an abandoned tunnel. The three surviving commuters; withdrawn mother Yi Ling, her son Lucas, and student Janice, are forced to band together and survive the night, as well as avoid the mysterious monster hunting them. Yi Ling still suffers from flashbacks to the car accident that killed her husband and nearly took Lucas` life too. When Lucas is snatched away by the monster, her maternal instincts are tested, and Janice`s ideas of family are challenged as she remembers her difficult relationship with her estranged father. Back at the subway control headquarters, the engineers do their best to make sense of the situation and rescue the survivors.