[Book #2 in The Union of the Night Chronicles] As a demigod, you can never expect your life to be 100% safe. For Marcus Packer, safety has been something he has cherished and embraced. Now, danger is on the horizon. When Marcus receives a prophecy from the original oracle of Delphi, him and his fellow campers at Camp Half Blood have to stop a certain primordial goddess gone-bad before she causes the destruction of the demigod world. But, there is hope. There is another half-blood camp on the other side of America. Will Marcus be able to unite the two camps? Or will he just give himself a new enemy?