The city is unraveling. And a power older than the Sovereign is waking. Ellie returns to Busal expecting respite. Instead, she finds a city coming apart at the seams—people vanishing without a trace, eerie zones where sound and light fail, and a creeping wrongness no one can explain. Even the energy woven into the city’s foundation—the very fabric of its protections—is shifting. The Servants are no longer hiding. Their agents burn knowledge from the archives and hunt those who remember. As the strange “Empty Places” grow, Ellie races to understand a pattern that dates back centuries—one that marks where the world itself begins to thin. To protect her home, Ellie must wield both the calculated discipline of her Blade ability and the volatile fire of the Kindling. But the deeper she digs, the more she begins to Busal was never as secure as it seemed. The seals are breaking. The past is bleeding through. And in the silence beneath the stones… something is stirring. Ancient protections are failing. The Servants are advancing. And Ellie may be the only one who can hold the deep at bay.

The seals are breaking. The ancient patterns are failing. And the power spreading through her may be the key to salvation. Ellie thought finding her vanished mentor would bring answers. Instead, she discovers Zaren has been hunting something far more dangerous than the Servants—an artifact that could either repair the failing barriers between worlds or shatter them completely. From the haunted port of Saltmere to the lawless Whispering Coast, Ellie races against servants of the Quell who use her own corruption to track her. Every seal that fails brings the Quell closer to breaking through. Every use of her opposing powers tears her further apart. And in the spaces where the separation of realms grows thin, something vast and hungry watches her progress with terrible patience. To save both worlds, Ellie must become something a bridge between realms, a wielder of impossible harmonies, and perhaps the last person who can restore the First Song before the boundaries collapse forever. Old debts are calling. Ancient powers are stirring. And the key to everything might already have been lost.