Art Jeffries, a renegade FBI agent, combats ruthless Federal agents to protect Simon, a nine-year-old autistic boy who has cracked the government's new "unbreakable" code. He can read MERCURY, the most advanced encryption code, as easily as other kids read English. This ability renders the new billion-dollar secret code vulnerable, especially if enemies of the United States should learn of Simon's abilities and capture him. Program Chief Nick Kudrow orders the "security threat" eliminated, but Kudrow hasn't counted on Jeffries getting involved. As they are trailed by deadly assassins,, Jeffries quickly realizes that no one can be trusted. Now time is running out and he discovers his only hope of survival is using Simon's special ability to bring their adversaries to justice.
A ruthless assassin (Willis) has been hired to eliminate someone at the very top of the U.S. government. Constantly changing his identity and location, he is known only as the Jackal. Everything about this hit man, including his sinister timetable, is a secret. Aware of the Jackals presence but uncertain of his purpose, The FBIs Deputy Director (Poitier) faces the biggest challenge of his career. In order to track down this cold-blooded killer, he and a by-the-book Russian intelligence officer (Diane Venora) enlist the aid of an imprisoned Irish terrorist (Gere) and these unlikely allies enter a global race against the clock to stop the mysterious mercenary before he can complete his deadly assignment.
Bruce Willis plays a convict sent from the future to uncover the identity of a terrorist faction who, it is presumed, were the cause of the plague that began in Philadelphia and wiped out 99 per cent of the world's population. Initially, he winds up in a mental institution struggling to convince the authorities of his sanity as they steadfastly dismiss his rantings about worldwide destruction...