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.

In Martha's Vineyard, Mass., conjoined twins Walt and Bob Tenor make the best of their handicap by being the fastest grill cooks in town. While outgoing Walt hopes to one day become a famous actor, shy Bob prefers to stay out of the spotlight. When a fading Hollywood actress, Cher, decides to get her show "Honey and the Beaze" cancelled, she hires Walt -- and his brotherly appendage -- as her costars. But their addition surprisingly achieves the opposite.