Park manager Fiona is tasked with taking care of some former friends who won an exclusive private sneak preview of Halloween at Liseberg - a whole night, all alone in the empty park. But cotton candy, lovely rides and lots of laughter soon turn into something completely different, as they realize they are not alone in the park. And the night of dreams quickly turns into a true nightmare.
After realising he has died at the scene of a car crash, Nathan descends into the depths of hell, where he is doomed to experience the pain of tortured souls along the way.
When a creepy Jack-in-the-Box is discovered and opened on the grounds of an exclusive girls' school, six brave students soon enter a fight to the finish against the unleashed demon.