The annual Halloween Howl bash in Castleblanca promises to be spooktacular until Hacker takes over the mayor's castle. He brings its seven stone gargoyles to life. Obeying Hacker's every command, the gargoyles capture the mayor and imprison him in the dungeon. To gain control of the creepy creatures, the CyberSquad must figure out how to use division to evenly split-up bunches of garlic and rock candy. But can they do it in time to rescue the mayor and save the Halloween Howl? Part of the "Cyberchase" series.