Freaky Stuff is the sequel to Weird Stuff and they are both VERY humorous. So it starts out with Brian Hobble again and he writes emails to Lance Cummings, the author who wrote Brian's favourite book, The Zombie Squad. Brian is giving Lance drafts of his new book, Freaky Stuff (Brian is making books too, just for fun and for writing practice).
So what happens is that after Brian shows his little brother, Matthew, The Zombie Squad, he gets obsessed and starts to believe that The Zombie Squad is actually real. This brings on real trouble. Later on, Brian's class has to pick a "buddy" in Matthew's class and unfortunately, Brian gets stuck with a fairy obsessed boy who thinks that he's a fairy and throws fairy dust around. Matthew's buddy is Brian's worst enemy.
Overall, all these problems with fairies and zombie starts appearing and Brian has to stop these obsessions. Since he is a big brother, he has to be a good role model for Matthew. Will Brian find a way to stop Matthew's Zombie Squad obsession? Will he be able to survive with a girly, fairy obsessed "buddy"?