For as long as Fei can remember, there has been no sound in her village. Her people are at the mercy of a mysterious faraway kingdom, which delivers food in return for precious metals mined from the treacherous cliffs surrounding them. When villagers begin to lose their sight, their rations shrink and many go hungry. Fei's home, the boy she loves, and her entire existence is plunged into crisis, under threat of darkness and starvation. Then Fei is awoken in the night by a searing noise, and sound becomes her weapon...