During a raging snowstorm, a drifter returns home to the blue-collar bar located in the remote Canadian town where he was born. When he offers to settle an old debt with a grizzled bartender by telling him a story, the night's events quickly
“竖锯”约翰•克莱默(Tobin Bell 饰)肉体虽死,但精神长存。这一次,某医疗保险公司的老总威廉•伊斯顿(Peter Outerbridge 饰)成为他狩猎和考验的目标。威廉贪婪狡诈,他发明了一套医保的计算公式,同时凭借爪牙的协助,成功向无数病入膏肓的人们拒保,从中赚取黑心钱财。然而他没有想到,自己有朝一日也要将生命的决定权交与别人手中。他必须按照“竖锯”的游戏规则,小心翼翼寻找逃生之路。