The Sourcerer tricks Austin, digitizes into cyberspace and hijacks the Codec, all to trigger a Cyber Black Hole that will consume the entirety of cyberspace, and the Guardians must stop him before he succeeds in destroying the Internet from within.
When the Sourcerer tries to break into Room 0, Austin and the others chase him off and learn the shocking truth about his identity. Meanwhile, the Guardians head to the Deep Web to stop Pirate Phishing Trawlers controlled by identity thieves.
When the Guardians try to stop Megabyte and Hexadecimal from breaking out of Virusylum, Vector and Enigma are captured by DIS Special Agent Nance. Meanwhile, Parker and Vera get Rowin to help D-Frag set Vector and Enigma free.
Trey tries to attract the attention of college basketball recruiters. Meanwhile, Megabyte takes over Social Media City and begins his reign of terror in cyberspace; and the Sourcerer heads to Quantum Heights to find the Guardians.
While Tamra hosts an awards show, Shari finds Room 0 and digitizes into cyberspace as Enigma. When she is captured by Megabyte, Vector, D-Frag, and Googz attempt to rescue her, only to wind up prisoners themselves.