The unexpected disappearance of Vaidona Spider, a new student at the school of monsters, has turned everything upside down. Best friends Venus McFlytrap, Rochelle Goyle and Robecca Steam, as always, took up the investigation. They are absolutely sure that the matter could not have happened without Miss Podletysh. And while all the other monsters blame everything on the normals - ordinary residents of the town of Sailem, the girls are ready to prove that friendship between people and monsters is possible, and Vaidona was kidnapped by someone completely different...