Having to leave Melbourne in a hurry to avoid various marriage proposals, two song-and-dance men sign on for work as divers. This takes them to an idyllic island on the way to Bali where they vie with each other for the favours of Princess Lala. The hazardous dive produces a chest of priceless jewels which arouses the less romantic interest of some shady locals.

There’s a secret war being waged in the homes and neighborhoods of Earth that the humans don’t even know about; an eternal struggle between two great armies: the Cats and the Dogs. The film follows a Cat’s plan to destroy a new vaccine, that if developed, would destroy all human allergies to Dogs, and the Dogs’ efforts to stop the Cats. Specifically, it’s the story of a young pup (Tobey Maguire) whose job it is to guard the vaccine. Other dogs include a wise older dog who watches out for him (Susan Sarandon), a large friendly dog (Michael Clarke Duncan), and a small dog who serves as an electronics expert (Joe Pantoliano). Jeff Goldblum is the human scientist that invented the vaccine.