At sixteen, Y/N arrives at Camp Half-Blood carrying powers she has spent her entire life hiding. Flowers bloom where she walks. Spirits linger near her. Grief follows her like a shadow. Then Persephone claims her as her daughter. As Y/N grows closer to Percy Jackson, forms an unsettling bond with Nico di Angelo, and begins seeing the ghost of Luke Castellan, strange things start happening around camp. The boundary between life and death is weakening—and if Y/N and Nico truly represent a path between worlds, Olympus may fear them more than the monsters ever did.