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.
When Mechanikat builds a robotic version of himself to help run his ship, the robot turns on him. When a guard dog named Buddy falls into a vat of rubberizing solution, he becomes Stretch-O-Mutt, the newest canine crimefighter in Metropolis.
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.
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.
Ignatius creates chaos when he uses a duplicating machine to duplicate himself and ends up creating dozens of new Ignatiuses. Streaky takes his fan club to Bat Hound's Metropolis stronghold during a field trip, and ends up putting Krypto and Bat Hound in danger.
Isis gets her hands on the Pied Piper's flutes and takes control not only of Metropolis' rats, but of Krypto and Bat Hound too. Stretch-O-Mutt must come to the rescue when Mechanikat bathes the Earth in red light, causing Krypto and Streaky to lose their powers.
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.
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 the Dogstars get sick, Stretch-O-Mutt assumes their identities to fool Mechanikat into thinking everything is normal so Mechanikat won't attack their ship. Snooky hits Krypto with a beam that makes the dog think he's a cat.
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.
While at camp, Kevin uncovers a scheme to take over the world by a group of beavers. Streaky goes on a crusade to hunt down alien elephants that have stolen all the peanuts in Metropolis.
Mechanikat turns himself into a giant robot to defeat Superdog. Krypto and Kevin must defeat an intergalatic prankster who has stolen a device that can stop time.
While Andrea prepares to celebrate Hanukkah, Ignatius inadvertantly brings a huge, angry snowman to life. Krypto manages to defeat the angry snowmen just in time for everyone to celebrate Hanukkah.
