Aqua showed up at camp scared and confused. She didn't know what was going on. And there's some weird prophecy going on relating to her, one she's never heard of and one she may never finish before things get, complicated. All she knows is that she's a descendant of a god and, another god? And that she's in love with the one and only, Nico Di Angelo, son of Hades. Through TONS of drama and battles will this couple fight for each other? Or will they both fight separately, to keep their love alive, or their love for others.

Cupid is playing a dangerous game, meddling in the lives of the demigods abroad the Argo II. Following defeating Gaea (alternate ending after House of Hades) Percy returns to Camp Jupiter without purpose, and is comforted by an unlikely person-Octavian- but can he trust him? Meanwhile, Nico and Jason explore their feelings for each other after their encounter with Cupid.