Kevin learns what it's like to be a dog when aliens adopt him as their pet. When dogs all over the city start acting like other animals, Krypto investigates and discovers that Mechanikat is the cause.
Kevin and Andrea team up when they become super-powered like Krypto.Krypto and Kevin are transferred into a videogame that tests their game-playing skills and superpowers.
Snooky attacks Krypto with an aging machine and inadvertently ages Kevin into an adult. Bat Hound finds his life turned upside down when Thunder Mutt follows him around as research for his next role a dog detective.
The Dog Stars argue as to who should take over the ship when Brainy Barker becomes incapacitated. Snooky infiltrates Streaky's fan club in order to scheme against Supercat and Superdog.
Bathound has a crisis in confidence when he pursues Catwoman's cat, Isis, who is able to use a bad luck charm against him. Krypto must come to the rescue of the Dog Stars when they are forced to perform in a space circus.
Streaky and Stretch-O-Mutt team up on the docks to battle a sinister parrot captain and his crew of rats. Robbie the Bird Wonder teams with Streaky to save Bat Hound and Krypto.
When Andrea learns that Krypto and Streaky are really Superdog and Supercat, she joins them and Kevin in a battle against Mechanikat. Bat Hound has to team up with Stretch-O-Mutt when Merton the Magic Rabbit captures Krypto.
Bailey sneaks around trying to get a picture that will prove Krypto is Superdog.Pleeek miniaturize Superdog & Kevin so the now-tiny heroes can go inside Streaky to captures a dangerous germ.
When Krypto is captured by Mechanikat, the Dog Stars send in a reluctant Streaky to sneak aboard Mechanikat's ship. Krypto and Kevin are reduced in size by aliens who are collecting specimens from other worlds.
Red kryptonite causes Krypto's tail to detach and take on a life of its own. Krypto, Kevin and Streaky have to save Metropolis when Ignatius changes the weather, turning winter into summer.