Kevin and Andrea team up when they become super-powered like Krypto. Then 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. Then 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. Then 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 Superdog and Supercat, she battles with them against Mechanikat. Then Bat Hound joins Stretch-O-Mutt when Merton the Magic Rabbit captures Krypto.

Ignatius creates chaos when he uses a duplicating machine to duplicate himself. Then Streaky takes his fan club to Bat Hound's Metropolis stronghold, and puts Krypto and Bat Hound in danger.

Isis gets the Pied Piper's flutes and takes control of Metropolis' rats, and Krypto and Bat Hound. Then Stretch-O-Mutt must come to the rescue when Mechanikat bathes the Earth in red light.

The Dog Stars argue as to who should take over the ship when Brainy Barker becomes incapacitated. Then Snooky infiltrates Streaky's fan club in order to scheme against Supercat and Superdog.

Bailey returns to prove Superdog's identity Then Plunk, a captured criminal, escapes.

When the Dogstars get sick, Stretch-O-Mutt assumes their identities to fool Mechanikat into thinking everything is normal. Then 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. Then 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. Then 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. Then 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 defeats the angry snowmen just in time for everyone to celebrate Hanukkah.

In order to find Krypto's secret rocket, Mechanikat sends Snooky in disguise to infiltrate the Supercat Fan Club. He soon comes to like his new friends, however...

Bailey returns to prove Krypto's secret identity as Superdog. Only this time, Andrea has to help Kevin keep the secret when he finds out about Supercat.

Peek and Pleek return to show Krypto and Kevin their latest criminal capture, named Plunk. But when Plunk escapes, a chase leads Krypto and Plunk into Streaky's body...

Stretch-O-Mutt is so excited to see the Dog Stars, however a pod enters with a space virus and infects the Dog Stars... except Krypto and Stretch-O-Mutt. To make things worse, the Dog Stars ship is struck by a Kryptonite ray. With all the Dog Stars sick, a weak Krypto and Stretch-O-Mutt must fool Mechanikat into thinking the Dog Stars aren't infected before Mechanikat and Snooky take over the ship!

Krypto is hit with a Cat-a-beam that makes him act and think like a cat! It turns out Mechanikat has conquered a planet and turned it into Catopia. Streaky finds the planet and thinks it's "heaven". Ironically, so does Krypto when he is forced to come with Mechanikat and be brainwashed. Streaky must find some way to change Krypto back, or Krypto will think he's a cat for the rest of his life.

When a parrot named Blackbeak and his rat pirate crew cause trouble in Metropolis, Streaky and Stretch-O-Mutt team up to put a stop to them. It seems like an easy task, but Blackbeak's pendant holds a special power.

"Robbie the Bird Wonder" returns from the South, only to get a jumpstart from Bat Hound because his superheroing hasn't been doing well. Both Robbie and Streaky notice that Krypto and Bat-Hound is missing, however, but manage to find where they are with Krypto wearing kryptonite over his neck and Bat-Hound tied to Krypto on a rocket. Streaky tries to save them, but gets caught as well. It turns out Isis and Mechanikat have teamed up, so now Robbie will have to save the day, despite having a bad time rounding up crooks.

While away at Summer Camp, Kevin overhears some beavers talking about conquering the humans. After following them, Kevin finds out that they are being led by alien beaver, named Buggy, who is helping them build weapons with the trees. After he is captured, he contact Krypto, who, along with Streaky, arrives to help. It's up to Krypto, Streaky, and Kevin expose Buggy's true identity to the beavers.

While Krypto's away, Streaky joins the Dog Stars on a missions to capture an intergalatic peanut pilferer. When the alien elephant gets away, they follow it to a giant peanut-shaped ship the size of a planet. Can Streaky and the Dog Stars successfully infiltrate the ship and get the peanuts back?

When Mechanikat is rejected as a leader of a club over Glorg, he sets to capture Superdog once again with a very powerful suit of his own. When Krypto and Ace get a distress signal (from their space suits), they land on a planet with Kryptonite dust and soil. With Krypto's weakened powers, will he and Bat Hound defeat Mechanikat's new makeover?

Brainy arrives outside Kevin's house, to tell Krypto that a new prankster/criminal is on the loose, so they try to guard a Timestopper, a device that freezes time. Meanwhile Barrump Barrump tries to steal the Timestopper from Kevin, but Kevin uses it to his advantage. Will Kevin's absurd usage of the Timestopper cost him the responsibility of guarding an important device?

After Kevin learns about the history of Hanukkah from Andrea, Krypto hears an alarm from the Lexcorp building just to find out Ignatious just wanted a toy named "Chippy Snowchip", and wants a ride to the toy store. Ignatious arrives at the stack of toys just to find out there is only one left. When a little girl finds Ignatious, everybody in the store screams. After Krypto repairs the store, he heads to the park to do snowmen. Andrea feels sorry for Ignatious, so she thinks about inviting him. Meanwhile, the snowchips Ignatious lost fall into each of the snowmen, causing the down lights to bring the snowmen to life!