When a goo monster crashes the science fair, the Princess in Black is on the job, and with the help of the Princess in Blankets, sets out to save the science fair.

"Escapade Johnson is at it again, this time he's participating in the boring Sanbornton elementary school science fair. Boring, that is, until mysterious events unfold and plots to foil the kid's projects result in chaos. Join Escapade for hoots and hollars, carnivorous gerbils, NASCAR rats, rabbits wearing lipstick, and the Phantom of the Science Fair!"--Publisher description.

Ella Mentary School is having a science fair! Guest scientist Dr. Snow has arrived to help A.J. and his friends conduct their own cool experiments. But what is "the Snowman" really planning? And what does STEM even stand for anyway?

In a world filled with mad scientists and evil inventions, one talented evil scientist's hunch-backed lab assistant has big dreams of becoming a mad scientist himself. He dreams of winning the annual evil science fair. Determined to prove he can create his own diabolical invention, Igor creates a female Franken-monster. But his creation, Eva, is sweet and sings. That is, until she falls into the clutches of Dr. Schadenfreude.