The plot: While searching an abandoned house, Sonny (Jeremy Ray Taylor) and Sam (Caleel Harris) find a mysterious book with a lock on it that was apparently written by R. L. Stine. When they open it, they discover the ventriloquist dummy Slappy (Mick Wingert) who uses his magical powers to help the boys around the house... at first. It seems that Slappy is up to his old tricks, and he's planning to make this Halloween far scarier than anyone in the town would have expected, and it's up to Sonny, Sam and Sonny's sister Sarah (Madison Iseman) to stop him.
