Aelia is only four years old when her parents are both killed. She doesn't know what killed them, but she's terrified. Too terrified to go back to the only place she's ever called home, Camp Jupiter. 12 years later, she's just a normal legacy living at Camp Half-Blood. Until one day, when she realizes that what killed her parents is still there in the shadows, waiting for it's next prey. She and her friends must fight against it, before it destroys everything they've ever known. All while struggling with keeping their friendships alive. But who is behind this? Who is watching their every move? Who is causing this chaos?