After a quest in California, Percy and Annabeth take a train back to Camp Half-Blood. But they meet someone who changes their lives. When they, along with the rest of the seven, get a quest with her, will they survive? Can they trust her? And why would the gods keep her a secret for so long? DISCLAIMER: I DO NOT own any of the wonderful Percy Jackson characters, they belong to Uncle Rick. This story is not a crossover but there might be references.