Racist police officer Jack Moony has a vendetta against Napoleon Stone, a charismatic black lawyer who is sleeping with Jack's old flame Crystal Gerrity. Jack has a heart attack, but his life is saved when he receives Stone's heart, since Stone died mysteriously the same night as Jack was stricken. Stone is not completely gone, however, and as a ghost he is all too happy to give Jack advice on how he should do his job and live his life.

FBI agent Barney Coopersmith is assigned to protect former Mafia figure turned informant Vincent Antonelli. In the witness protection program one is supposed to keep a low profile, but that is something that Antonelli has trouble doing. Coopersmith certainly has his hands full keeping Antonelli away from the Mafia hitmen who want to stop him testifying, not to mention the nightclubs...