In World War II era Los Angeles, the manager of the Culver Hotel leaves his nephew in charge for a weekend. The nephew changes the name to the Hotel Rainbow and overbooks with royalty, assassins, secret agents, Japanese tourists, and munchkins. Secret Service agent Bruce Thorpe and casting director Annie Clark find romance amidst the intrigue and confusion.

When his father - who owned a circus - dies, Oscar inherits 5 million dollars - and 3 orangutans. However there's a condition connected to the money: if he gives away the apes or just one gets sick or dies during the next 3 years, the zoologic society will get all the money. So he not only has to deal with 3 apes and an annoyed girlfriend, but also with a greedy zoologic society's president.