Insomnia spreads in a small town, causing fear and panic. As the situation becomes dire, two couples find salvation on an abandoned ranch, but as nefarious characters descend upon the land, claiming it as their own, and chaos ensues.
金波医生（Harrison Ford 饰）的妻子在家中被人谋杀，虽然金波当晚撞见独臂凶手并与之搏斗，但是凶手终于逃走，金波本人却因种种不利证据被判定为谋杀罪。在押解前往监狱的途中，一名犯人试图逃脱造成狱车事故，金波在混乱中搭救了一名警员并趁夜色逃逸。赶到事故现场的联邦司法官山姆（Tommy Lee Jones 饰）接手此案追捕金波，山姆为人精明强干…
