Layla, labeled a "talentless waste with no magic gift," scrapes by gathering herbs in the remote town of Darkbrook. She is in fact the hidden bloodline of House Lind, secretly sheltered to avoid a family catastrophe. She chances to save a dying little white snake, unaware it is Silas Frost, the Sovereign of the Heavens, whose divine realm has fallen and whose power has been sealed. A single drop of her heart's blood accidentally forges an ancient life-and-death soul bond, tying their fates together forever. Behind this master-familiar dynamic where both hide their true agendas, a revenge-driven feud that will upend the Three Realms quietly begins.