Hazel knows there is something unusual about Percy. He is not the typical new camper who just learned he was the son of Neptune. She also knows that her half-brother, Nico di Angelo, whom she has only recently met, has secrets. When she introduces Nico to Percy and Percy says he feels he knows Nico, she believes him even when Nico denies it. Hazel tells Nico everything she knows about Percy, including the impending attack on Camp Jupiter. Nico says that Gaea, the “earth goddess…the oldest goddess of all” (60) is behind the attack. He says that she is angry the Olympian gods are in charge, and she wants to take over. She has several children that are giants and rumors say they are being reborn to help their mother take power over the mortal world. Gaea’s first move will be to kill all the demigods to keep them from helping the gods.

Frank arrives to take Percy back to camp. When they are alone, Nico admits to knowing Percy and tells Hazel she can trust Percy. Nico warns her that something big is happening and she needs to keep her secrets to herself and remain safe at Camp Jupiter.