There's a reason scary movie fan and master of the macabre Casey Clive looks ten times paler and more exhausted than the average sixth-grader: MONSTERS! He's got tons of them! For the last...er...unusual year, monsters have been arriving on Casey's doorstep needing a place to stay, something to eat, and lots and lots of attention. It's getting impossible to keep these haunted houseguests a secret, much less get a good night's sleep. Casey has to find a solution, and fast!

But someone is onto Casey's supernatural stash. Zandra, the new girl at school, not only knows about his creature collection, but she's found a monster, too. And it needs his help!

Now Casey must juggle location-scouting for his house of horrors, keeping his monsters protected from the townspeople and an evil droid of doom, and navigating middle school. Good thing he can trust Zandra...or can he?