Four teens discover that they're next-gen Guardians with a mission to save the world, by defending it in cyberspace. The Internet revolutionized the world, but it also left it vulnerable to attack. With the help of VERA, the last surviving cyberbeing from the original Guardian Program, our heroes stream into cyberspace where they use their awesome code-based powers to battle viruses that have been unleashed by a ruthless hacker.

Pursued by intergalactic bounty hunters, the Critters return to Earth on a secret mission and encounter lovelorn high-schooler Christopher, his crush Dana, his best friend Charlie, and his mom Veronica, whose past will come back to bite them—literally.