When a group of young twenty-something neighbors moves in across the hall, Jess and Schmidt are determined to become friends with them. Meanwhile, Nick enacts a series of pranks on Schmidt to make him think he's getting old.

Jess gets a job as a zombie at a haunted house, but is more frightened of her changing feelings towards Sam. Schmidt and Cece are perfectly matched in the costumes they're wearing, while Winston and Shelby are worlds apart in theirs. Nick gets a visit from a former college crush who shows her affection in a scary way.