The mysterious English mansion on Gramarye Hill had fascinated young Ian from the time he had come to live with his aunt. His longing to enter Gramarye coupled with a sensation that he had been there before frustrated and confused him. When he is finally allowed to enter Gramarye, he meets the eccentric owner, Dickson and several other folk with mysterious powers. He soon meets a girl named Roesia who, like Ian, cannot remember anything from early childhood. Ian and Roesia soon find out how they fit into this strange household. They enter into adventures that they never had dreamed possible as they time jump with Dickson from the 20th century to meet impossible dangers and unknown enemies from the Iron Age.