Marcus Burnett is a henpecked family man. Mike Lowrey is a footloose and fancy free ladies' man. Both Miami policemen, they have 72 hours to reclaim a consignment of drugs stolen from under their station's nose. To complicate matters, in order to get the assistance of the sole witness to a murder, they have to pretend to be each other.

Police Lt. Leonard Diamond vies to bring a clever, well connected, and sadistic gangster to justice all the while obsessing over the gangster's girlfriend.

Lt. Bobby Quinn is a Special Forces commando killed during a recon mission in the Cambodian jungle. But when Quinn interrupts his own stateside autopsy, he discovers that the rest of his dead squad has been resurrected with a ravenous apetite for human flesh. Now with the help of a wisecracking cook and a sexy film geek, the part-zombie Quinn must stop the plague before it can infect the entire nation. Who holds the shocking secret behind this blood-crazed carnage? And what happens when Quinn stops gnawing on raw steak and starts chomping on the hot chick?