A freewheeling Detroit cop pursuing a murder investigation finds himself dealing with the very different culture of Beverly Hills.

An uptight advertising exec has his entire life in a filofax organizer which mistakenly ends up in the hands of a friendly convict who poses as him.

Jimmy Dworski is a criminal serving the last 48 hours of a jail sentence. He wins a couple of baseball tickets by calling a radio quiz show. With help of other inmates, he escapes to go watch the game. When by chance he finds the Filofax of executive Spencer Barns who loses it while traveling on a business weekend. Jimmy finds cash, credit cards and the key to a big mansion. He jumps on the opportunity and starts posing as Barns. While the real Barnes is trying to find his Filofax he gets in all sorts of trouble. How will things turn out when the two finally meet?

Detroit cop Axel Foley is delighted when he receives a surprise visit from his best friend Mikey Tandino, who lives in California. Not long after Mikey arrives in Detroit, Mikey is killed, right in front of Axel, by a man named Zack. Axel follows Zack to Beverly Hills, California, where Beverly Hills police department Lieutenant Andrew Bogomil assigns Detective Billy Rosewood and Rosewood's partner, Sergeant John Taggart, to keep an eye on Axel. Axel visits his friend Jenny Summers, who works in an art gallery. With Jenny's help, Axel discovers that Zack works for Jenny's boss, Victor Maitland, the man who owns the art gallery. Maitland is a drug kingpin who is using the gallery as a front, and Maitland had Zack kill Mikey after Maitland accused Mikey of stealing some of Maitland's bonds. With the help of Jenny, Billy, and Taggart, Axel does what he can to make sure Maitland and Zack won't kill any more people.