The kids are struck down by a flea infestation, and Freddy and Batty are tasked with tracking down the mysterious Doog, keeper of the Fleaminator, the most powerful flea treatment known to dog, before they're all expelled!

It's Howloween, and Howlington is on lockdown. But when the students stage a play that goes wrong and the lockdown is disrupted, it will be up to the kids to save the grown ups from themselves - including Principal Pincus.