Goosebumps 2: Haunted Halloween (also known as Goosebumps 2 and marketed as such on home release) is a 2018 American horror comedy film directed by Ari Sandel and written by Rob Lieber, from a story by Lieber and Darren Lemke. A sequel to 2015’s Goosebumps, it is based on the children’s horror book series of the same name by R. L. Stine and stars Wendi McLendon-Covey, Madison Iseman, Jeremy Ray Taylor, Caleel Harris, Chris Parnell and Ken Jeong, with Jack Black reprising his role as Stine from the first film.
Teenager Sarah Quinn (Madison Iseman) lives with her mother Kathy (Wendi McLendon-Covey) and younger brother Sonny (Jeremy Ray Taylor) in Wardenclyffe, New York. Sarah is attempting to get into Columbia Universityby writing an essay about fear. Kathy agrees to watch Sonny’s friend Sam Carter (Caleel Harris) while his father goes out of town.
Sonny and Sam are attempting to start a garbage cleanup business, and are called after school to clean up an abandoned house. Inside, they find a locked manuscript and open it, causing Slappy the Dummy to appear. They unknowingly bring him to life by speaking magic words found in his pocket. The manuscript is later stolen by a bully named Tommy Madigan (Payton Wich).
At home, Sonny is working on his science project, a miniature version of Nikola Tesla’s Wardenclyffe Tower. Slappy then reveals he’s alive to Sonny and Sam, and gets their trust by using his magic to do the boy’s chores and homework. Meanwhile, Sarah goes to a party to meet her boyfriend Tyler (Bryce Cass), but sees him kissing another girl. Slappy sabotages Sonny’s science project and overhears Sarah talking about Tyler.
The following day on Halloween, Slappy uses his powers to attack Tyler, and Sonny accidentally damages the school science lab with his sabotaged science project. Later, Sarah arrives home and questions two boys about Slappy. The group realizes that Slappy is at fault and is evil. The kids capture Slappy and try to dispose of him, but he escapes. Later that night, they find an article online about the events that happened in Madison, Delawareand try to contact R. L. Stine (Jack Black) after realizing the book they found was an unpublished Goosebumps manuscript called Haunted Halloween. Stine, now living in a cabin in the woods, hears their message and departs for Wardenclyffe.