在这部黑色凯迪拉克恐怖/惊悚片中,本片根據真實故事改編，一群好友在一家林間的酒吧買醉慶祝，這三個死黨在酒吧裡無意間引起一場爭執，於是三人迅速乘坐他們的Saab牌房車離去。途中他們撞到了查理（藍迪奎德），他是當地的巡警，他的車似乎出了點毛病。
這三人的麻煩其實才剛剛開始，有一輛黑色的凱迪拉克向他們挑釁，要來場生死極速的賽車。很快勝負立見，他們的Saab房車駛出路面，黑色凱迪拉克卻安然無事，一副事不關己的模樣。難道他們過去曾有什麼不可告人的秘密？他們最好趕快想起來，否則離死期就不遠了。
他們被邪惡的陰影籠罩著，又找不到任何搭便車的機會，這個被命運捉弄的三人組必須跟時間競賽，迅速查出那輛黑色的龐然大物為何想致他們於死。
Every year Scott Robertson, a generally admired Yale student, and his screw-up mate C.J. Longhammer from Minnesota cross the Wisconsin border for a wild night. Scott has a girl in his Saab, but as usual must return to the bar as CJ started a fight and this time Scotts adoring kid brother Robbie is with them, and just was about to lose his tormenting virginity. Scotts fists get them out. They are followed by a black Cadillac, make a risky drive on the lake to shake it, allow Robbie to take an urgent leak and give a lift to a neighboring sheriff, Charlie, who has car trouble in Arctic weather. The Cadillac keeps following and even ramming them, so they start wondering why and suspecting each-other, and it gets worse...
