Ignatius clones himself with a new Lexcorp device, and when the machine makes endless clones, Superdog has to fetch them; the Supercat Fan Club members want to go on a field trip with Streaky, but the Penguin's birds have other plans.
Andrea follows Streaky into Krypto's clubhouse and finds out both heroes' secrets; Mechanikat creates a Dirtbot on Earth to steal jewels; Mertin the Magic Rabbit wreaks havoc on the fair, and things worsen when Krypto's caught in the act.
Mechanikat uses an aging ray on Superdog, but accidentally hits Kevin in the process; Thundermutt asks Ace if he can study the way Ace fights crime so he can perform in a movie, and Ace learns the pain of helping him out
When Mechanikat makes a robot double of himself, he finds that his creation has a mind of its own, forcing him to seek help from the Dog Stars; a dog guard, Buddy, slips into a vat of chemicals and is able to mold and stretch his body.
While the Dog Stars repair their ship, Krypto introduces them to Ace, who is mocked because he doesn't have any powers, but he's later counted on for help; Jimmy disguises himself as a dog, but when Mutsy's group needs him, he could be in over his head.