Percy is confused. When he awoke from his long sleep, he didn't know much more than his name. Somehow he has managed to make it to a camp for half-bloods, but it doesn't ring any bells with him. The only thing he can recall from his past is another name: Annabeth.
Hazel is supposed to be dead. When she lived before, she didn't do a very good job of it. Now, because of a mistake she made back then, the future of the world is at risk. Hazel wishes she could ride away from it all on the stallion that appears in her dreams.
Frank is a klutz. His grandmother says he is descended from heroes, but he doesn't see it. His bulky physique makes him feel like an ox, especially in front of Hazel, his closest friend. He trusts her completely—enough to share the secret he holds close to his heart.
Beginning at the "other” camp for half-bloods and extending as far as the land beyond the gods, this breathtaking second installment in the Heroes of Olympus series introduces new demigods, revives fearsome monsters, and features other remarkable creatures, all destined to play a part in the Prophecy of Seven.