A funny and touching story about the American family Otis, who move into an old English castle where a ghost has walked for three hundred years. But the Otises are not afraid of the ghost. On the contrary, it soon becomes the other way round. When the ghost howls around the castle at night, Mr Otis gives him oil for his chains and Mrs Otis offers him medicine. The smaller children play tricks on him and frighten him. Only the kind-hearted, fifteen year old Virginia Otis feels sorry for the poor ghost, and through her innocence and courage she is able to help him to eternal rest.