A young woman is invited by her girlfriend, who lives in an English country mansion, to stay there with her. The estate, however, isn't quite what it seems--and neither is the friend who issued the invitation.。

经验十足的FBI探员斯琼姆（斯科特•派特(tè )森 饰）来到(dào )被折磨得筋(jīn )疲力尽的警(jǐng )察局，协助(zhù )警探一起研(yán )究被竖锯玩死的受害者尸体，试图找出蛛丝马迹。

又一位带着“竖锯”标签式的死亡特征的受害(😏)人被警方发现，这令探员艾里克•马休斯(当尼•沃伯格 饰)重新回到之前的惊悚噩梦之中。

与此同时，这栋大厦的一处电梯突然故(gù )障，悬停在(zài )20层附近，电(diàn )梯中的三男(nán )两女被困。

Five girls, five best friends, all haunted by their past mistakes of an April Fools prank gone fatally wrong, meet again after two years for a summer week long getaway in the woods to reconnect and reconcile.。

与此同时(shí )，他们发现(xiàn )由香似乎被某个男人盯上了。

侥幸活命的张反而由此激发所有的兽性，一场野兽对野兽的修罗(🔳)之战渐次激烈……　　本片也部分镜头过于血腥而成为韩国首部被限制上映的商业影片。