The CyberSquad tries to keep cool as a heat wave sweeps through the cybersite during the annual Factoria Flower Show.

Hacker is looking for an eternal power source, so he steals Solaria's Sunisphere. The Cybersquad has to get it back before the whole site freezes over.

A day at the library turns into a cyberventure when Jackie, Matt, and Inez learn that Hacker has kidnapped Dr. Marbles, the only person who can save Motherboard from an evil virus. The rescuers learn to use a map as a mathematical tool as they navigate across a cyber island in search of Marbles—then try to escape before a huge earthquake turns the island inside out.

Cybersquad must stop Hacker from activating his newest creation, Gigabyte, before the light of the midnight moon, or else Dr. Marbles mind will be transferred into the monster, and Hacker will learn about all of Motherboard's secrets. The kids and Digit know Hacker is in a castle on a spooky, Halloweenish site called Castleblanca. Unfortunately, Motherboard wasn't able to specify which castle he is in. The kids must survey the residents of Castleblanca to pinpoint the exact location where Dr. Marbles is being held captive.

Dr. Marbles finds the encryptor chip in an ancient pyramid, but the Mummy who guards the pyramid finds Marbles. When the Cybersquad arrives, they must work their way through the chambers of the pyramid, find Dr. Marbles, and escape before a trap set by the Mummy seals them inside forever.

Wicked casts a spell that erases the memories of the citizens, so that they forget how to count.

Hacker attempts to take power from the vault in Poddleville for himself by stealing the residents' power pods, much to the detriment of the community. Each power pod has a shape and a number from 1 to 12, and after Inez and Matt are imprisoned it becomes a race to solve the pattern and enter the vault.

Hacker participates in a land rush in which participants cannot build property bigger than Judge Trudy's land. Hacker's land is accused of being bigger than Trudy's, but they turns out to be the exact same size.

Hacker has challenged Slider to a skate-off. But suddenly, the power to the brand new stadium goes out. The Cybersquad must find a way to harness solar energy, store it, and makes sure it lasts through the game. However, someone keeps sabotaging their plans. The show must go on! Cybersites: Radopolis

Digit is lured to R-Fair City, a cybersite full of carnival games, where he is kidnapped by a disguised Hacker. The kids must find the unfair/crooked game to find Digit. Meanwhile, they learn about chance and how to spot an unfair chance of winning and losing. Along the way they meet Lucky, a cab driver, who offers them a chance to gain a free cab ride while they search for Digit. Digit is locked in a bird cage with Buzz and Delete as his guards.

Dr. Marbles builds Symmetria because of his passion of symmetry, but Hacker steals the symmetrizer and destroys Symmetria by splitting everything symmetrical in half. The Cybersquad has to figure out how to get the symmetrizer back from Hacker.

Matt gets his mom a special Mother's Day gift—two adopted alpacas for their family farm! In Cyberspace, the CyberSquad go on a wild adventure, helping Hannah find the ideal spot for growing Mother’s Day cyberberries.

The Dingerville Dragons need to get around traffic so they can get to the field to practice.

Hacker's niece Harmony returns to the Northern Frontier with a new pet, Sparkletoes, which quickly outstays his welcome.

The CyberSquad investigates after the Lilting Loons of Botsberg go missing and their pond is replaced by trash.

The CyberSquad awaits the return of Kacy's Comet, but a glaring light in the sky blocks out all the stars.

It's Arbor Day in Cyberspace, but Buzz is more interested in his video game than planting a tree, so Delete calls on the CyberSquad for help.

Jackie wins a chance to apprentice with fashion designer Fabio DeZine and learns it takes more than a pretty drawing to design something that makes a sustaining impact.

The CyberSquad and Digit try to find the source that is heating up the ocean waters and bleaching the coral reef.

The CyberSquad investigates a mysterious creature that tramples over Crestwood Park, leaving visitors too scared to enter.

The CyberSquad tags along as the Northern Frontier ducks migrate to Restoria, helping the flock avoid numerous hazards along the way.

Hacker tries to restore his giant robot, Gigabyte, by using the rays of Jimaya's sun. Delete is excited, but Buzz becomes jealous.

Hacker steals the Golden Droplet of Shangri-La, which doubles upon being removed from its pot, and doubles forever. He also kidnaps Master Pi for insurance.

The kids fail to stop Hacker from stealing Pandora's box in Mount Olympus, so they must solve a riddle and complete challenges to satisfy Zeus and earn a second chance.

Hacker suctions up all the dirt in Dingerville Park just before The Dingerball Series -- a once-in-every-four-year championship -- leaving CyberSquad scrambling to refill the missing dirt before the big game starts.

A popular new restaurant in Castleblanca serves delicious meals, but all the residents have become cranky and tired. The CyberSquad quickly learns the restaurant's food is unhealthy...and Hacker is behind it all. To get Hacker to stop making his unhealthy food, Digit challenges him to a cook-off. But if Hacker wins, the kids must leave Cyberspace forever! Who will win the hearts--and stomachs!--of Castleblanca?

The CyberSquad must investigate why Hacker saved the cybersite Factoria. Hacker not only forced the Factorians into making toy helicopters, he also forced them to make free meals known as "junk food," freely distributed in vending machines. Due to the unhealthy food issue, they need to find soil and a sunny place around the site to plant a colorful but healthy garden. In the end, it is revealed that Hacker wasn't hiring them to work on toy copters, instead spy copters built to take over the CyberWorld.

Jackie and Inez search everywhere for cherries so Digit can make his famous cherry supreme dessert for food critic Bone Appetit. Unfortunately, Hacker stole the last batch of cherries of the season to make "Cherries a la Hacker". After traveling all over Castleblanca and Factoria, there are still zero cherries.

The CyberSquad faces monsters, canyons, and cliffs as they pursue the Prism of Power, a vital piece of Motherboard's operating system that Hacker has stolen.

The CyberSquad is excited to celebrate Giving Thanks Day with Jackie's pumpkin pie, but there's a big problem -- Hacker has taken all the pristine produce.

It is Motherboard's birthday, but not all is well. The CyberSquad must save Cyberspace on their own when a malfunction renders Motherboard powerless, while the Hacker attempts to crush Control Central between two giant Trash vortexes. They must reboot Motherboard, move the Control Central, and throw a birthday party for Motherboard

The kids promise to help Pearl spread the word about the water problem in Canalia, and they convince Canalians to change their water-wasting ways.

Professor Bobson calls on citizen scientists to help when the trillers fail to show up for the Migration Celebration.

Hacker enlists the help of CyberSquad to get back home.

Hacker plots a revenge when he loses to Inez at the annual flower-growing contest.

As the Three Pigs celebrate their new cottage with a housewarming party, Hacker and Wicked accidentally zap away Mount Evermore -- which had been protecting the cottage from direct sunlight.

Delete joins forces with the CyberSquad to build a giant windmill for the little town of Bottawa after Hacker steals its power source.

Motherboard invites the kids for a slumber party with Digit in Control Central.

On his annual trip to visit Eugene, Digit finds out that poor conditions in Mermaidos have forced many of the fish from their home.

A disagreement drives a wedge between friends when Inez tells Creech her bike path should be shut down.

It’s Halloween Haunt-O-Rama in R-Fair City, and Hacker has a wicked treat up his sleeve: to keep the kids out of Cyberspace forever by crashing Motherboard’s portal system. But when Buzz and Delete make a mistake, the portal system crashes too late, and the kids and Digit are trapped in R-Fair City! Now, the kids must find enough energy to power Digit’s portal rebooter and keep the amusement park going. But with the celebration in full swing, can they find big and small ways to save enough energy? And can they ever get back to Earth again?

Ivanca the Invincible has a treasure map that Dr. Marbles mails to Motherboard's "buddy list." However, the virus also causes her to mail it to her "baddy list," which gives Hacker the map. Meanwhile, Digit is on an undercover mission for Motherboard, going to Hacker pretending to have reverted to the dark side, into thinking he's turned evil again, to stall him long enough so the kids can find the treasure first.

The Wicked Witch of Happily-Ever-Afterville turns Digit into her husband. Wanda enlists the CyberSquad on a mission to Terra Swampa to rescue Digit. But first, they need to design an invention to help them get across the swamp.

Buzz sets out to throw the best birthday ever for Hacker. Nothing but the finest food, decorations, and music will do! There’s just one problem—Buzz’s plans will cause way too much pollution! Delete brings in the CyberSquad to help.

Hacker steals Pyramida's Eye of Rom from its pyramid, which he plans to use against Motherboard. Because of this theft, when the pyramid's shadow hits the Nile River, the site will crash.

Hacker decides he needs to change his luck from bad to good, so he hires Baskerville, a new henchman, to replace Buzz and Delete while the 10 good luck charms of Cyberspace ensure him good luck. The kids and Digit use logic to rescue the charms and stop Hacker.

Professor Archimedes has the encryptor chip, but has to activate the emergency defense system when Hacker arrives to steal it. He and his building shrink to 2D, and the kids and Digit have to put him back to 3D.

Hacker challenges the kids and Digit to a game show entitled "Find Those Gleamers!", Gleamers being lightning bugs that power ships such as the Grim Wreaker. The kids have to make their ship, the Grim Wreaker 2, take off before time expires.

Hacker steals the cyber slug Icky to destroy Aquari-yum, and the kids make a code to fool him.

Hacker steals all the water from Sensible Flats to buy up their land, and the kids must determine when this started and how to fix it.

After Hacker kidnaps the kids, he crash-lands in Shangri-La, where Master Pi challenges both groups to a special contest. The winner is free to come and go at will, while the loser has to stay in Shangri-La until they learn to solve the problems.

Hacker's invention to clone himself accidentally clones Delete instead, leading him to produce 3 clones every time he sneezes. The kids and Digit enlist the help of clone catcher Cy Clone.

After crashing into each other's ships and crash-landing, the kids and Hacker must deal with bartering with one another to repair their ships. Also, Buzz and Delete suddenly become brilliant, and an evil genie named Warren disobeys his mother's orders to stay inside his bottle.

The kids chase Hacker around a building consisting of floors that have both positive and negative numbers.

A Sky Wall is built to protect Happily Ever After from Hacker, but he plans to invade when Wicked's operatic voice will break it. One of the Three Little Pigs secretly aides Hacker after a promise of protection from the Big Bad Wolf, so the kids have to do double duty to expose him and stop Wicked from singing.

Digit and the Cybersquad are tricked into going to a land of giants, with Motherboard unaware of their presence. Hacker leaves them stranded, and threatens to send another deadlier virus to Motherboard. The Cybersquad must escape and stop Motherboard from receiving Hacker's virus.

Hacker pollutes Cyberspace with dangerous cyber-static by tampering with four satellites designed to keep everything free from cyber-static cling.

Hacker kidnaps the Beast, a member of a famous band on Mount Olympus. Without him, the band can't perform their music properly and in sync, which causes the Cybersite to begin self-destructing. Its all up to the Cybersquad to reunite the band and save Mount Olympus.

Lady Lovelace comes up with a way to eliminate Hacker's virus, but Hacker traps her and Dr. Marbles in her time machine, and programs it to travel to the beginning of time.

Hacker becomes the king of Radopolis, replacing King Dudicus. Then a competition begins and three players in Team Hacker compete against Matt, Jackie, and Inez in Team Motherboard. If Team Motherboard wins, King Dudicus reclaims his throne. If Team Hacker wins, Hacker becomes the king of Radopolis forever and the Cybersquad will never be able to return to Cyberspace. A later amendment to the bargain is that if Team Hacker wins, Inez will have to become one of Hacker's cheerleaders.

Thanks to one of Wicked's spells, Motherboard starts turning all cybersites mean and green. Digit gets the antidote but it breaks, and there isn't another one available to break the spell, so the kids must figure out how to make the antidote before all cybersites turn bad. Meanwhile, Hacker has a romantic encounter with Wicked.

Hacker reprograms trapeze artist Glowla's robotic whale partner, Spout, into going rogue to destroy R-Fair City.

Wicked poses as a princess who had announced to get married, and her groom is Hacker. Sam Vander Rom and his co-host plan to air the wedding on cyberwide TV, while the kids look for the real prince and princess.

In Poddleville, Hacker gets robbed and frames magician Slythe O'Hand and his dog Presto for it.

Digit and the kids compete against Hacker on the popular cooking game show "Fearless Chef."

On Halloween, Hacker invades Motherboard Control Central with a toy frog.

Someone has stolen the legendary cyber beast Choocroca from cyberspace EcoHaven.

King Dudicus accidentally uncovers the long-lost "Totally Rad Ring of Radopolis," which grants whoever wears it on their head their hearts desires. The citizens suggest putting it in a safe place where nobody can use it for anything, but Hacker steals it and uses it to attack Motherboard.

Hacker's insulting letters to Mr. Zero cause him to leave Gollywood, leading all zeros on signs to disappear and further chaos to ensure. However, contrary to what the people think, their main central bank still has all nine million snelfus, which Hacker plans to use to finance all his conquering quests.

Hacker doesn't know he is allergic to magnetite, which he uses to plan to erase Motherboard forever. Meanwhile, Hacker keeps a bunch of Scritter hostage, and he subsequently captures Digit.

Tikiville crowns its new monarchs with a race, which Creech, once part of a royal family, plans to win. Hacker also enters the race, planning to use the crown to turn Tikiville's giant statues into an army if he wins.

After the prince of crabs takes a dare and becomes dishonest after falling in the Abyss, the kids and Digit must find the Grapes of Plath to restore his ability to tell the truth, located in the Fountain of Truth. Unfortunately, Hacker is pursuing the Grapes as well. Because he thought Motherboard said "Fountain of Youth", and assumes the grapes can and will fix his chin problem.

The Cybrary is under attack again, and the kids have to use logic and elimination processes to stop Hacker from entering Motherboard's vault.

The kids win the encryptor chip in an auction after saving enough money to buy it, but Hacker infected it and subsequently made himself the ruler of Cyberspace. After saving Dr. Marbles, the kids help him save Motherboard by having to reboot her, destroying the encryptor chip in the process. Meanwhile, Hacker breaks up with Wicked upon discovering she spent all 10 million snelfus on clothes and merchandise.

The kids win the encryptor chip in an auction after saving enough money to buy it, but Hacker infected it and subsequently made himself the ruler of Cyberspace. After saving Dr. Marbles, the kids help him save Motherboard by having to reboot her, destroying the encryptor chip in the process. Meanwhile, Hacker breaks up with Wicked upon discovering she spent all 10 million snelfus on clothes and merchandise.

Digit and the kids help Shari of Frogsnorts bake the Cosmic Crumpets. Hacker then attempts to use the magical Cosmic Crumpets to steal the powers of the scorcerers of Frogsnorts and become the most powerful magician in Cyberspace. When Hacker steals the sorcerers' powers, the Cybersquad helps Shari restore the magicians' powers.

Hacker tries to destroy the festivities during Cyberspace's favorite holiday, Starlight Night (a mix of Christmas and New Year's Eve in the same day).

The Cybersquad helps Sharri Spotter make a film about Frogsnorts while staying within a budget, but Hacker keeps trying to run the up budget by putting himself in the film.

Hacker kidnaps Icky to find a power source to power up his new invention so he can use it to rule over Cyberspace again.

Hacker's secret plan to take over Cyberworld by using the electric eel's energy continues. The missing piece of the puzzle is the Prism of Penguia. Since Emperor Penguia can't remember where he hid the prism, everybody in Penguia has to shed tears until it is found. The Cybersquad & Fluff must face several obstacles, including a booby trap, to "angle" their way out so that nobody no longer has to shed tears.

Slider's father owes Hacker a debt, and if they don't pay up in time, Hacker will steal and take over his father's garage.

Hacker's new invention is revealed, and is ready to create chaos.