Billy and Amanda Walker aren't too sure about the new shop that just opened up in their small town of Boo, Pennsylvania. They're even more unsure of the shop's owner. A tall, spooky looking man who goes by the name of Mr. Night.

When pumpkins mysteriously begin attacking people and children go missing, Billy and Amanda are positive it's tied to Mr. Night and his new antique bookstore that's filled with strange spell books and spiders. Unfortunately, no one will believe them.

With Halloween threatened and the lives of their friends in danger, it's up to Billy and Amanda to figure out what's going on, and save their favorite holiday before it's too late.