The Gromble sends his three monster-students on a routine scare of an old house. But it appears the house is haunted. Monsters don't believe in ghosts -- or do they?

Ickis, Krumm, and Oblina pick a seemingly mild-mannered Englishman to scare, thinking it will be a piece of cake. The trio soon discover the scare is not as easy as it looks. The Englishman is a secret agent, dodging danger at every corner.