The main Cybrary is under attack. Hacker, disguised as an exterminator called the Vermin Vexer and gets amnesia after an accident and buzz becomes boss , has released a mysterious cyberbug that is systematically destroying certain information — but Ms. Fileshare, the overworked Cybrarian, is too busy to notice. When Hacker uses bar graphs to confuse Ms. Fileshare, the kids create bar graphs of their own to counter his contentions. Which graph will Ms. Fileshare believe? And what information is Hacker trying to destroy?
This is the last episode that begins with "R" (articles not included) until the tenth season episode, A Recipe For Chaos.