Luke Harrison's dad makes horror movies, and it's usually fun to be around such scary stuff—especially when you have your own monster museum at home. But when two ventriloquist dummies join the collection, things get creepy. Real-life creepy!Slappy and Snappy are a real scream…but not the funny kind. And they have a plan to make everyone's lives miserable. Will Luke be able to stop this terrible twosome before it's too late?