They dreamt the improbable, and pulled off the impossible. A group of right-wing militia zealots combine forces with a band of rogue police officers, led by the city's police commissioner, and commandeer New York's City Hall. Among the hostages taken is the mayor. A young FBI director is given a 48-hour deadline to release a convicted domestic terrorist in exchange for the hostages. Can he and his fellow agents come up with a solution to thwart the anarchists' threats in time?