The Veil is weakening. The echoes are awakening. And the children of the pact are no longer safe within the Domes. After the explosive fallout of Dome 3, Lione, Nanami, and Seraphina find themselves hunted by both the old system and the ancient powers it tried to bury. As the Sirens fight to uncover their origins and the secrets of the Veil, new alliances form in the ashes—and old enemies stir beyond the Outer Boundary. But with the truth comes danger. A forgotten Guardian stirs. A rebel force rises. And the fractured world of Elaris is about to remember what was lost. In this pulse-pounding second installment of the Domed Cities Saga, elemental powers clash, forbidden bonds deepen, and the path to salvation leads straight through the heart of war.