Peter Plunkett's Irish castle, transformed into a hotel, is about to be repossessed. In an effort to attract more tourists, he decides to hire ghosts to roam the premises. However, when a busload of American tourists arrive, things begin to go wrong. Among them is the daughter of the man who holds the mortgage and a paranormal psychologist and his family. When the real ghosts of the castle become angry and decide to take a hand in things, will they all survive Halloween?