Fifteen-year-old Rachelle Brinon trains to be a woodwife whose charms protect her village from the evil that lurks in the dark woods. But one day she is seduced by a wolf-like creature, and becomes bound to him by an invisible crimson thread. Three years later, Rachelle takes a position as a bodyguard to Prince Armand. At first, she loathes the prince, but in time Rachelle realizes that he could help her find the legendary sword that will save their world from endless night.