Geronimo admits that he's a scaredy-mouse, which is why he hates Halloween. His sister and nephew persuade him to write a Halloween book in one day. As research, Cousin Trap demonstrates the frightening gags in the trick store he's working for (Geronimo barely survives the terror!). Geronimo and Benjamin meet Creepella von Cacklefur to check out her Halloween costume. Her home is a tomb in a cemetery --- and she develops an instant crush on Geronimo!

Creepella plans a Halloween party, and they get Tina Spicytail to cook up the spooky treats. The only problem --- Tina doesn't understand that the dishes are pretend and that "Sewer Slugs" are really pasta. Oh, dear. Will Geronimo have to eat real bats' eyes? But first he has to write that book on how to throw a Halloween party, which is included in IT'S HALLOWEEN, YOU 'FRAIDY MOUSE! You'll even find the recipe for Sewer Slugs. Yum!