Falsely accused and framed, the former Luna, Grace, is exiled to the frozen wasteland by Alpha William, where she gives birth to his biological daughter, Lia, in the bitter ice and snow. Four years later, Grace reportedly "perishes," and William comes searching for his heir, only to be deceived by the antagonist, Caroline, who replaces the true heiress with her own biological daughter, Claire. Once brought back to the castle, the rightful daughter, Lia, is reduced to a lowly servant forced to wear a silver collar, suffering brutal abuse amidst howling blizzards and merciless whippings.
Meanwhile, having miraculously survived, Grace makes a powerful and dominant return under the alias Helena—now as the fiancée of William's younger brother, Raphael. At the grand engagement banquet, she is set to expose Caroline's shocking lie about stealing her "Eyes of Healing," and during the Holy Moon Spring trial, she will trigger the breathtaking awakening of Lia's true Alpha bloodline. Faced with the late-coming truth, the guilt-ridden Alpha can only resort to a life-for-life trade and self-blinding, initiating the ultimate groveling journey to win back his wife.
