当特工人员杰里米·瑞恩斯（斯蒂芬·道尔夫 Stephen Dorff 饰）从昏睡中醒来，却发现自己置身于一个密闭、黑暗的空间里。他能听到马达的轰鸣以及来自周遭的震动，似乎自己正被关在一辆车的后背箱内。他怀疑因为欠下赌资而遭到报复，可是种种迹象表明这次绑架又跟赌博无关。后备箱内有LED计时器一次次倒计时，旁边还配备了无线电。通过无线电，他知道另一个自称白宫外事部官员的家伙也受到同样的待遇，绑架者的目的似乎想从杰里米口中套出一份重大的秘密。对方了然他的一切，连杰里米的女友也尽在掌控之中。 　　杰里米三缄其口，想尽一切办法从后备箱内逃出，绑架背后的真相正慢慢揭晓……What appears to be a random kidnapping becomes something more sinister when Secret Service Agent Jeremy Reins discovers he's being used as a pawn in a terrorist plot. Watching the clock tick down to an unknown catastrophe, Jeremy is forced by his captors to listen to the outside world on the brink of collapse, knowing that the only way to save the people he loves is to divulge a secret that he has sworn to protect.