It's midnight in the Medieval village of Tintinhull. A group of children, including the twins William and Emily, have gathered in the churchyard to watch for a special but dangerous type of ghost. That same night the village is robbed by a gang of thieves. The twins' father is the village constable, but he can't solve the crime. Anger, suspicion, and poverty threaten to destroy the community. The twins are just learning that they have been gifted with special powers. Can they save their village from doom?