This film is put together by three city ghost stories that occurred after midnight. The first story describes a loud mouth slacker cop encounters after being ordered to guard a murder scene alone. The second has a couple accidentally hit someone while driving but could not find the victim's body. The third is about a bad son who is afraid his late mother would return for revenge, so he would rather spend nights playing mah jong with friends and wouldn't dare to go home, unfortunately things in this world have a way to go the opposite way......

　　音乐人叶浩（林峯 饰）与当主持人的天晴（盛君 饰）结束了爱情长跑，走进了婚姻的殿堂。婚后，他们搬进了新房。房中遗留着前房主的一个玩偶，天晴对此非常喜欢，给它取名叫吉咪，伹从此怪异现象环生。玩偶有一双十分诡异的眼睛，时刻监视着新主人的一切动向。不久，天晴怀孕了，经检查是双胞胎，而叶浩的事业如日中天，又登上一个新台阶。由于新作品很受公司高层赏识，他毎天要加班很晚才能回家，就在此时，一连串怪异的事情接踵而至，天晴莫名跌倒，早产只生下一男孩，然后行为举止怪异，而叶浩的新作竟牵扯到一命案之中。天晴的妹妹（吴千语 饰）被一高人指点方悟，原来这所房子大有玄机......

本片由三个故事组成：

　　故事一《头魂》：讲述年轻警察（林晓峰 饰）负责看守一宗无头女尸案的现场，竟然发现了案情的真相跟管理员七叔（林尚义 饰）有关。

　　故事二《撞鬼》：年轻夫妇（徐锦江 饰）（江希文 饰）开车撞死人不顾而取，结果被鬼魂一直纠缠，把夫妻两捉弄得苦不堪言。

　　故事三《最后晚餐》：老母亲（罗兰 饰）逝世了，她的儿子（黄秋生 饰）、媳妇（苑琼丹 饰）、孙子孙女便是十分不孝。母亲在三七之夜回到了家里，原来仍牵挂着自己的孩儿。众人才能感受到老母亲的爱，但已太迟