Detectives Mike Lowrey and Marcus Burnett search for a $100million heroin consignment brazenly stolen by a French drug kingpin from the police evidence room. However, after a mix-up over a phone call from a potential witness, each cop has to assume the other's identity - Lowrey becoming the henpecked family man and Burnett the playboy. Will Smith and Martin Lawrence star in Michael Bay's action thriller, with Tea Leoni, Tcheky Karyo and Theresa Randle.

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.