A look at the top-secret, high-tech espionage war going on between cats and dogs, which their human owners are blissfully unaware of. Our WB celluloid heroes embark on a hilarious adventure that takes them from Hollywood to Las Vegas, and in search of missing father and the mythical Blue Monkey Diamond. Teen detective Nancy Drew accompanies her father on a business trip to Los Angeles, where she happens upon clues to a murder mystery involving a movie star.