While in Transylvania, the kids read about Frankenstein's monster returning and frightening the town. In order to solve the mystery, the group get hire in as babysitters for the new residents of Frankenstein Castle, the Dracula's. / The gang's in Paris for the 200th birthday of the Academie Versailles, a pastry school, to interview Madame LaTorte. But while there, they come across the ghost of Chef Maras, founder of the school, who is scaring everyone away and maybe forcing the school into bankruptcy.