 In this movie, De Niro plays Mitch Preston, a hard-nosed, hardworking police detective. Following in the reality-based TV trend, TV producer Chase Renzi played by Renee Russo, wants Mitch to star in her new show about the day-to-day activities of a real cop(think COPS). Not a moment will go by when he isn t on camera, whether at work or at home. Mitch doesn t particular like the idea, especially working with his new partner Trey Sellars (Eddie Murphy), a cop who spends much of his time mugging for the cameras mounted inside the car he shares with Mitch. Throughout the rest of the movie, the two never got along, whereas Mitch is trying to investigate the whereabouts of a criminal who possesses a mythical "big gun" that has enough firepower to collapse a house, while Trey just wants to be famous.