The Monstore is a one-stop shop for all your monsterly needs in this
enormously funny story that's full of friendly, kooky creatures.
At the back of Frankensweet's Candy Shoppe, under the last box of sour
gumballs, there's a trapdoor.
Knock five times fast, hand over the bag of squirmy worms, and you can
crawl inside The Monstore.
The Monstore is the place to go for all of your monsterly needs. Which
is perfect, since Zack definitely has a monsterly need. The problem? His
pesky little sister, Gracie, who never pays attention to that "Keep Out"
sign on Zack's door--the one he has made especially for her.
But when Zack's monsters don't exactly work as planned, he soon finds
out that the Monstore has a few rules: No Refunds. No exchanges. No
exceptions.