After moving to a small town, Zach Cooper finds a silver lining when he meets next door neighbor Hannah, the daughter of bestselling Goosebumps series author R.L. Stine. Stine is very strange and mysterious and it turns out for good reason. He is a prisoner of his own imagination -- the monsters that his books made famous are real, and Stine protects his readers by keeping them locked up in their books. When Zach unintentionally unleashes the monsters from their manuscripts and they begin to terrorize the town, it's suddenly up to Stine, Zach, and Hannah to get all of them back in the books where they belong.