The story follows a recent divorcee who spends her daily commute fantasizing about a seemingly perfect couple who live in a house that her train passes daily, but something shocking happens there one day.,外出侦察的村民不断回来轮换,到第五人的时候带回一条不利的消息,有更多的狼群出现在村外,楚翔和小丝听罢再也坐不住,两人随着换班的侦察兵来到村口,雪下了已经有半寸厚,这是历年下雪的总数了,村口有一幢较高的……