At a sleepover, Taylor dreams that Uncle Charlie is in danger and trying to contact her. Soon she discovers her friends are sharing the same dream, in which they must help Uncle Charlie and save themselves from being trapped in a nightmare forever.

Taylor is transported to a nightmarish version of Rock Island where she doesn't exist, and her friends don't know her. With her presence rapidly destroying the alternate world she must win the trust of these old friends in order to save it.