A team of scientists working on a remote dig site find the buried body of an enormous monster, perfectly preserved even after 200 million years. As soon as the beast is uncovered, however, an alien spacecraft suddenly appears above them and brings the monster back to life! The creature immediately sets about levelling the surrounding urban landscape and shrugging off the best firepower the military can throw at it. A lone scientist, working on decrypting an ancient set of hieroglyphics, may be on the verge of finding the aliens' weak point, but will it be too late?

John Matrix, the former leader of a special commando strike force that always got the toughest jobs done, is forced back into action when his young daughter is kidnapped. To find her, Matrix has to fight his way through an array of punks, killers, one of his former commandos, and a fully equipped private army. With the help of a feisty stewardess and an old friend, Matrix has only a few hours to overcome his greatest challenge: finding his daughter before she's killed.

导演沃尔特．希尔以《四十八小时》等警匪动作片闻名影坛，本片是他其它风格的尝试，在美国上映相当卖座。男主角理查德．普赖尔，十年前以《银星号大血案》成名，至今仍是美国首屈一指的黑人谐星。此片中他扮演一个二流棒球运动员蒙弟，当他最穷困潦倒时，舅父的三亿美元遗产从天而降，只要他在一个月内先将三千万美元花掉就可继承，于是种种五花八门的花钱方法陆续粉墨登场。本片的故事犹如一个现代童话，对现代人的金钱观念进行了嘲讽，其中最有意思的一段，是蒙弟一掷千金参加纽约州长竟选，但竟选标语却是“谁也不要选"，对金钱贿赂选举的丑恶现象讽刺鞭挞得淋漓尽致。

NYPD cop John McClane's plan to reconcile with his estranged wife is thrown for a serious loop when, minutes after he arrives at her office, the entire building is overtaken by a group of terrorists. With little help from the LAPD, wisecracking McClane sets out to single-handedly rescue the hostages and bring the bad guys down.