When an eerie silence freezes the ancient harmonic pulse of Bellwether, twelve-year-old Nayeli and a master sound-smith descend into the deep subterranean vaults to revive it. Armed with wooden mallets, singing crystal dust, and her own relentless tempo, Nayeli must bridge the acoustic void before her town goes silent forever. A heart-pounding, lyrical adventure about courage, connection, and discovering the unbreakable rhythm inside yourself.