Facing financial ruin, Abigail and her father search for affordable lodgings until a strange solicitor arrives with an astounding offer: the use of a distant abandoned manor house. The Fosters are startled to find Pembrooke Park entombed as it was abruptly left: tea set on the table, moth-eaten clothes in the wardrobes, a doll's house left in mid-play. The handsome local curate and his family welcomes them with a warning: Beware trespassers drawn by rumors of a secret treasure room.