After 20 years with the LAPD, Det. Mitch Preston (Robert De Niro) just wants to catch the crooks, finish the paperwork and retreat to his mundane life at home, where he eats TV dinners and pursues his hobby of making bad pottery. Patrolman Trey Sellars (Eddie Murphy) really wants to be an actor--he's only a cop because he made a lousy waiter. When Sellars bungles Preston's undercover case and media hounds catch it all on tape, the irate Preston shoots up a news camera that gets in his face. Over-caffeinated network exec Chase Renzi (Rene Russo), upon seeing the damning evidence that could have killed her cameraman, is captivated by Preston's complete lack of charm and convinces her superior she can save his crappy network by pairing Preston and Sellars up on a reality show. As expected, Preston is reluctant--and even more so when he's forced to take the mugging Sellars as his partner. The two take impromptu acting lessons from iconic actor/director William Shatner (playing himself), and set off to attract an audience, boost the ratings, become celebrities and get the bad guys in a televised reality christened Showtime. Meanwhile, the evil Cesar Vargas (Pedro Damian)--whom we know is evil 'cause he hides in the shadows, he's flashy and well groomed, and he mumbles in an unfathomable Third World/ European accent--is stockpiling guns powerful enough to knock down houses and blow the doors off a Brinks truck.