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.

From casting to the final scene, this special shows how the cast and crew of "Young Royals" brought Wilhelm and Simon's heartwarming journey to life.