In the shadowy depths of the Underworld, Queen Zalara, a being of immense power, dies giving birth to her heiress. Her demise triggers a cosmic eclipse, a testament to her inherent might. In a desperate act to evade eternal damnation, Zalara performs the forbidden Alchemy of Souls, seeking a new vessel. She awakens in the human realm, disoriented and horrified to find herself inhabiting Lyra, a blind, feeble orphan girl, rescued and cared for by her kind grandmother, Elara, in the quiet village of Noldor.
Zalara, trapped within Lyra's weak form, grapples with the indignity of a mundane human life. Her frustration boils until the night of a Full Moon, when her true power surges, transforming her into a primal, hungry werewolf. This terrifying freedom allows her to roam and hunt, causing mysterious "mishaps" in Noldor. The village's unrest reaches Emperor Fëanor III and his formidable wife, Queen Isolde. The Emperor seeks the wisdom of Master Alderon, the spirit guide, to cleanse the village, but Isolde, a master of forbidden magic and alchemy, harbors a dark secret and actively obstructs Alderon's efforts. She knows precisely what Zalara is, fearing exposure.
Lyra's unassuming presence catches the eye of Crown Prince Aerion, who, charmed by her, invites her and Elara to the Royal Palace. This grants Zalara unprecedented access to the court, fueling her suspicion of Queen Isolde. Lyra, now pregnant with Aerion’s child and falling deeply in love, discovers a shocking truth: Isolde bears the mark of the Alchemy of Souls. Zalara's investigation uncovers Isolde's true identity—Shaman Choi, who usurped the real queen’s body years ago. As Isolde's borrowed form begins to decay, she frantically seeks a new vessel, leading to a climactic confrontation during another soul-transfer ritual. The powerful Ice Stone, reacting to Zalara’s presence, isolates them all, revealing Zalara's full form and the suppressed soul of Lyra. The ultimate twist: Lyra is the original, rightful Queen Isolde. Zalara must now choose between reclaiming her throne in the Underworld or embracing her new life, love, and child in the human realm, knowing her own vessel's decay is inevitable.