Darrell Williams (USHER) is a successful deejay who, with his partner Busta (KEVIN HART), dreams of opening his own recording studio some day. Buff and handsome, Darrell has no problem impressing the ladies ranging from club-goer Cherise (K.D AUBERT) to his 10-year-old neighbor Lexi (ISIS FAUST) and her guardian, Big Momma (JENNIFER ECHOLS).
Although it won't mean any money for them, Darrell agrees to spin the tunes gratis for his old friend Frankie Jr. (ANTHONY FAZIO), the hip-hop loving son of mafioso 'Don' Frank Pacelli (CHAZZ PALMINTERI). Darrell's dad used to work as Frank's bartender, and thus Darrell is something like another son to him. And Frank would like him to provide the music for a surprise party held in honor of his daughter Dolly (EMMANUELLE CHRIQUI) who the deejay hasn't seen in years.
She's returned home to New Jersey from Oakland where she's attending law school and dating successful lawyer Chad (GEOFF STULTS) who's aiming to become a partner at his firm. Yet, during the celebration, a drive-by shooting occurs, and thanks to Darrell's quick actions, he manages to save both Dolly and her father from harm, but gets shot in the shoulder in the process.
Frank's minions -- Fat Tony (ROBERT COSTANZO), Fish (ROBERT DAVI) and the hot-headed Jackie (MATT GERALD) -- think rival mob boss Salvatore Vincenzo (NICK MANCUSO) is responsible, but Frank wants to make sure before they act rashly. He also wants someone to serve as Dolly's bodyguard, but when she refuses the usual suspects, he hesitantly agrees to let Darrell take the job when Dolly specifically requests him.
Dolly really doesn't want anyone hovering over her, but Darrell feels beholden to Frank. Yet, as the dashing deejay and mob princess end up spending time together, they start to develop feelings for one another. While dealing with that awkward situation, they must also contend with more attempts on her life, all stemming from a coup within the mob.