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.

Dating coach Alex 'Hitch' Hitchens mentors a bumbling client, Albert, who hopes to win the heart of the glamorous Allegra Cole. While Albert makes progress, Hitch faces his own romantic setbacks when proven techniques fail to work on Sara Melas, a tabloid reporter digging for dirt on Allegra Cole's love life. When Sara discovers Hitch's connection to Albert – now Allegra's boyfriend – it threatens to destroy both relationships.