The episode begins with Ace tackling Kara after she picks up a tennis ball. Babs introduces him to Kara and says he's the greatest dog in the universe. Kara disagrees and says her old dog back in Smallville is the greatest dog in the universe. She whistles, and Krypto crashes through a brick wall and jumps to her. Babs and Kara argue whose dog is better, and say there's only one way to settle the issue.
The scene cuts to black and fades into the Schuster Arena where an announcer is announcing the "44th annual Metropolis Kennel Club dog show". The show starts with an obedience trial, in which Ace impresses the announcer while Krypto fails to meet "MKC standards". The dogs continue to take various tests, until the dog show is disrupted by two hyenas that ran away from Harley Quinn. Ace and Krypto fight off the hyenas together, and Krypto throws them out of the dog show.
The announcer announces that the winner is "Waffles the Pomeranian", and Kara and Babs complain that even each other's dog is better than that. They smile at each other and the shot cuts to Pelham Park where Kara and Babs agree both dogs are good boys, and the episode ends with Kara and Babs shouting "bad boys" at the dogs while they chase after a cat.