Deina has lost everything to save the ones she loves. Theron is alive, but in the mortal realm no one is safe. Though Orpheus is gone, the ruthless Aristaeus is now searching for a legendary object that bestows a power even the gods fear. So when Deina sees an opportunity to save herself, destroy Aristaeus and free the mortal realm from the cruelty of the gods, she sets out on a new quest. To succeed, she must turn away from everything she holds true.