When a 12 year old girl named Cassia Taylor is found dead in the Puget Sound she is taken to the Seattle Cemetery but disappears the next day. No body knows what has happened but Cassia and her new friends Aspen and Juliet are brought to Camp Half- Blood in New York where they find out they are Demi- Gods. Every monster and God want Cassia dead because she is too powerful and has unlocked an immortally important secret. Cassia isn't just any normal Demigod, she just doesn't know how special she is.