Three months after balancing the Clockwork Sea and the mechanical world of Dunveil Harbor, Lara Winter discovers that her hard-won peace is unraveling. The sky above her town begins to hum-a single note that grows into an otherworldly chord, heralding the return of something ancient and powerful.The integration of the musical realm of Meridiath and the mechanical world of Dunveil has created unexpected consequences. Buried voices the things people never said, the songs they swallowed-are manifesting as translucent echoes that haunt the living, demanding to be heard. Meanwhile, the Choir of Echoes, led by the mysterious Tidemaker's servants, wants to transform both worlds back into pure song, believing that existence as music is freedom from the grinding mechanics of measured time.