When eccentric young governess Winifred Notty arrives at a remote Gothic manor, a string of unsettling events leads the household to suspect she isn't who she claims to be—but the truth may be far more dangerous than they imagine.

Kevin is stuck in a boring holiday park with his family, when he discovers a video-tape from an obscure 1980s TV show. When he plays the video he accidentally unleashes a strange creature known as the Pooka into the world. The Pooka causes chaos and Kevin gets the blame. His family don’t believe him when he tells them it’s the creature’s fault.