It has been one year since Gaea was defeated, one peaceful year. However, Camp Half-Blood is changing, and Percy doesn't know why. With Annabeth and the rest of the camp growing distant, Percy feels all alone. Especially since Leo is still missing, Hazel and Frank are at Camp Jupiter, Nico is in the Underworld, and Thalia is off with the Hunt. Luckily, Percy still has two friends willing to stick with him; Jacob Firth, Son of Apollo and Hannah Andle, Daughter of Hecate. Amidst rumors of traitors, spies, and a new prophecy, Percy must make a choice. Will he run from his fate, or stick with his friends to defeat the looming evil?
When Thalia wakes up from her years as a tree, Percy, Grover, and Annabeth are desperate for answers. Luke's betrayal has left them all on edge, and they hope Thalia might hold a clue to his plans. But as they question her, they find that while Thalia has no memory of Luke's schemes, she does recall overhearing his conversations with a mysterious girl named Mae. Who is Mae, and why does she seem to know so much about Luke? As the trio dives deeper into this new mystery, they begin to unravel secrets that could change everything. What could Luke be planning, and what secrets could this "Mae" hold?