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.

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.

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.

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.

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 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.

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

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.

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.

The kids are assigned to steal a crystal that powers Hacker's gadgets, while distracting Hacker with a series of spa treatments.

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.

Motherboard is suddenly sickened by the green liquid because of Buzz and Delete. So it's up to Digit and the kids to heal her using blue liquid.

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.

Hacker has a statue which broadcasts his voice 24/7. This leads Cybersites to surrender once they can no longer bear it.

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 starts an election campaign to become the new ruler of Cyberspace, planning to replace Motherboard. He also appears to turn over a new leaf, doing good deeds all around Cyberspace to gain public favor for votes. The Cybersquad must prove that Hacker is lying about being good before the election is over.

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.

While Jackie freaks out over what to get her mother for Mother's Day, Hacker wrecks the Mother's Day festival in Cyberspace by interfering with a train shipment of special flowers. Jackie ultimately gets one such flower for her mother.

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

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 Cybrary, owned and operated by Ms. Fileshare, has a bug problem, so she hires an exterminator named the Vermin Vexor (Hacker in disguise) to help her with the problem. Hacker instead adds more bugs so all references of Motherboard get switched to himself, and he alters two bar graphs to hide the truth.

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.

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

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.

This is the first episode in the four-part mini-series "Hacker's Transformation".

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

This is the second episode in the four-part mini-series "Hacker's Transformation".

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.

This is the third episode in the four-part mini-series "Hacker's Transformation".

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.

On the final episode of the four-part mini-series "Hacker's Transformation".

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

Hacker plans to use statues of himself to cause a power outage everywhere.

Motherboard's memory integrator has been stolen, so Digit and the Cybersquad need to find out what it looks like and who stole it.

Slider gets kidnapped by Hacker and gets brings him to Tick Tockia. The Cybersquad must save their friend from the Hacker.

Wicked builds some Broom and stated that it's a Cybersquad Seal of Approval, even though they didn't even test them. Jackie, Matt and Inez test out the brooms to see if they are faster.

When Hacker steals the legendary Egg of Benedicta, the kids need to get the egg back from Hacker.