When Octavia returns from the belly of a monster, she unexpectedly brings the cure to a plague with her. For a time she can diagnose any illness and name its remedy just by looking at the afflicted. After that ability fades, however, she discovers the monster’s revenge. Glass singers use the power of their voices to create beautiful objects. Octavia, once declared the greatest voice in three generations, has lost her talent. A powerful queen watches from afar as Octavia struggles to come to terms with her loss. The queen and her ancient living mirror understand better than anyone the cause of Octavia’s trouble, and how to cure it. But Queen Anula wants to use Octavia, not save her.