Moony (Bob Hoskins) is overweight, out-of-shape, narrow-minded, vice cop who's in love with a hooker named Crystal (Chloe Webb). Stone (Denzel Washington) is a slick urban lawyer who's defending Crystal. Moony hates Stone. But when Moony suffers a heart attack and Stone dies suddenly in a car accident, the two become closer than ever dreamed possible - Stone's heart is transplanted into Moony's body! And if that wasn't bad enough, Stone comes back from the dead to haunt Moony with a story about how he was really murdered by drug dealers - and now they're after Crystal. And he'll keep on haunting him until they solve his murder together!