Krypto tells the story about how he arrived on Earth and met Kevin. Then, Krypto continues his story, explaining how he became known as Superdog.

A flea from Krypton besieges Krypto when it chews his hide. Then, Krypto helps save a caterpillar after hungry Ignatius enlarges the bug with a growth ray.

Krypto has his first encounter with the Dog Stars as they try to capture an evil kitten named Snooky Wookums. Then, Streaky learns a lesson about being a superhero after he gets superpowers from Krypto.

When a teleporter gets stuck in Melanie's diaper, Krypto and Kevin have to save her before Melanie teleports herself into danger. Then, Streaky feels neglected when Andrea adopts a new cat named Delilah.

Kevin and Krypto have to spend a day in each other's bodies when red kryptonite causes their minds to switch. Then, Krypto becomes Bathound's partner when they chase after Joker's hyenas.

Kevin learns what it's like to be a dog when aliens adopt him as their pet. Then, when dogs all over the city start acting like other animals, Krypto investigates and discovers that Mechanikat is the cause.

When Krypto loses his powers because of red kryptonite, Bathound tries to equip him with bat gear. Then, Krypto is stalked by a companion robot dog from Krypton who is programmed to be his best friend.

Krypto poses as an old firehouse Dalmatian in hopes of helping the aging dog keep his job. Then, chaos reigns at the zoo when a zookeeper's assistant takes Kevin's communicator and starts doing everything the animals request.

Streaky tries to be a big-time superhero to impress his nephew, Squeaky. Then, a movie star dog makes a pact with Snooky so that the actor can wear a super suit that gives him powers.

When Krypto is captured by Mechanikat, the Dog Stars send in a reluctant Streaky to sneak aboard Mechanikat's ship. Then, Krypto and Kevin are reduced in size by aliens who are collecting specimens from other worlds.

Streaky programs Dogbot to do super deeds so that Krypto can spend more time with Kevin. Then, Kevin's bad boy cousin, Bailey, visits and discovers Krypto's secret.

Bathound has a crisis in confidence when he pursues Catwoman's cat, Isis, who is able to use a bad luck charm against him. Then, Krypto must come to the rescue of the Dog Stars when they are forced to perform in a space circus.

Red kryptonite causes Krypto's tail to detach and take on a life of its own. Then, Krypto, Kevin and Streaky have to save Metropolis when Ignatius changes the weather, turning winter into summer.

Ignatius creates a formula to grow super hair. Then, while Krypto is away, Bathound is forced to team up with Streaky to stop a fish-stealing operation.

When a baby monkey comes into her life, Melanie learns why monkeys are better off in the rainforest and humans are better off at home. Then, when Bathound is affected by laughing gas, he becomes too silly to fight crime.

When Streaky accidentally gets the power of invisibility, it wreaks havoc on his life. Then, the Dog Stars are given chew toys that make them annoy one another.

When Krypto gets amnesia, the Downtown Dogs trick him into thinking he's part of their group. Then, Tail Terrier leaves the Dog Stars for the comfy life of a pet only to discover that it's not all that it's cracked up to be.

Streaky speaks before his fan club and tells a whopper of a tall tale about his superhero exploits. Then, Drooly, a dog who desperately wants to join the Dog Stars, gets his chance when Snooky endangers the Dog Stars.

When Kevin and his class eat Ignatius's lighter-than-air muffins, they start floating away, forcing Krypto to come to the rescue. Then, Krypto and Kevin try to stop Ignatius from going back into the past in order to change the future.

In order to control the Dog Stars, Mechanikat turns them into puppies. Then, Krypto is forced to partner with Ignatius while investigating thefts within Lexcorp.

Krypto and Bathound pursue a villain named Dogwood who steals trees. Then, Krypto and Kevin are at their wits' end when an enlarging ray turns Melanie into a 30-foot giant.

Bathound assists the Dog Stars when Hot Dog goes missing. Then, Krypto comes to Jimmy The Rat's aid when he disguises himself as a dog and becomes a member of the Downtown Dogs.

A royal cat has a "Roman Holiday" with Streaky, allowing Isis the opportunity to steal the Queen's jewels. Then, Krypto becomes jealous when he thinks Kevin likes Bathound more than Superdog.

Bathound is frustrated when a feisty Robin decides to become his crime-fighting partner. Then, Krypto and Streaky have an undersea adventure when red kryptonite turns them into fish.

When Tusky loses his tooth, Mechanikat is determined to steal it. Then, chaos ensues when Waddles, the Penguin's penguin, steals Streaky's superpowers.

Kevin learns a lesson about the importance of family when he and Krypto are magically transported to Storybook Land, where the characters resemble Kevin's relatives. Then, Krypto and Kevin's trip to Storybook Land continues.

Bat Hound and Streaky must team up when Krypto is away.

Melanie learns that monkeys belong in the rainforest when she encounters one.

Bat Hound becomes too silly to fight crime after being affected by laughing gas.

Streaky accidently gets the power of invisibility. However, he soon learns the about the problems it causes.

When the Dog Stars get some chew toys, they begin to get on each other's nerves.

Krypto gets amnesia due to red kryptonite and can't remember who he is. The Junkyard Dogs try to turn him into a bad dog.

The Tail-Roping member of the Dog-Stars finds out that Krypto's civilian life is practically paradise and decides to become an Earth dog citizen himself, only to find out that the grass isn't always greener on the other side.

Streaky tells a tall tale to his fan club.

Drooly applies for membership in the Dog Star Patrol.

Ignatious creates a formula that makes people levitate like balloons!

Ignatious uses a time machine to travel back in time to the period of the Dinosaurs, but Krypto and Kevin come back with him.

Mechanikat turns the Dog Stars into puppies.

Krypto is forced to team up with Ignatius to investigate thefts at Lexcorp.

Krypto and Ace take on a mutant dog-plant hybrid who is stealing all the trees in Metropolis.

An alien growth ray turns Melanie into a 50-foot giant toddler.

While the Dog Stars are repairing their ship on Earth, Krypto introduces them to Ace. He is soon mocked because he doesn't have any powers of his own, so he leaves. However, when Snooky abducts Hot Dog without leaving a trace, Ace may be the only one the Dog Stars can count on.

Tired of living like a rat, Jimmy disguises himself as a dog. But when Mutsy's group wants him to join them, he may be in over his head.

A royal cat takes the day off with Streaky, allowing Isis the opportunity to steal the Queen's jewels.

Krypto becomes jealous when he thinks Kevin likes Bat Hound more than Superdog.

Bat Hound is at his wit's end when a feisty Robin decides to become his crime-fighting partner.

Krypto and Streaky have an undersea adventure when red kryptonite turns them into fish.

Tusky looses his tooth and the Mechanicat is after it.

Waddles, the Penguin's penguin steals Streaky's superpowers.

Kevin learns a lesson about the importance of family when he and Krypto are magically transported to Storybook Land, where the characters resemble Kevin's relatives.

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!