Lizzie and Charles Peterson enjoy competing with one another and set out to see who is the best dog trainer when they foster Chewy and Chica, two Chihuahua puppies.
Lizzie Peterson, who takes care of animals whenever she can, offers to lend a hand when an energetic Dalmatian is left on their porch, but when the puppy destroys Lizzie's Halloween costume, she's not sure if she can convince an owner to adopt him.
Much against their parents' wishes, Charles and Lizzie Peterson adopt a puppy they name Goldie; but she turns out to be more difficult than they imagined.