When Tess Hunter and her mother arrive in Century Falls, they find out that it is a strange village. The village is haunted by a disaster that occurred during the performance of an occult ceremony forty years earlier. Tess befriends the only other children in the village, brother and sister Ben and Carey Naismith, and notices that Ben has strange powers that he gets from the waterfall that gives the village its name. Uncle Richard of the Naismiths teams up with his longtime father, Dr. Josiah Naismith, to complete the unfinished ceremony using Ben's powers, in hopes of vanquishing the spirit of a mysterious, godlike being, Century.