Spike is assigned as a night watchdog for a department store; he mistakes janitors Tom and Jerry for prowlers, and spends the night chasing them throughout the store./Tom and Jerry compete against each other in a cross-country motorcycle race./Police officers Tom and Jerry are assigned to train Katy O'Kitty (voiced by Kathy Gori), a female feline rookie, by letting her ride with them; their resentment over this assignment is made worse by the fact that she is better at their job than they are.