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.

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.

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

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 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.

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.

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 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.

When Hacker takes all the Ooze from EcoHaven for himself, Inez, Jackie, Matt, Digit and Wigit must find a way to shoo Hacker away before the EcoHaven animals lose their energy.

The team battles a giant garbage heap in Perfectomundo, which threatens to break through the cybersite dome; Hacker seeks to grow an army of monster plants.

Cybersites: Perfectomundo