Kim Shin, once a valiant general in Korea's Goryeo era, is cursed with immortality, transforming into a goblin destined to protect souls. After centuries of an endless life, he seeks a human bride to end his undying existence. Ji Eun-Tak, a high school student with the unique ability to see spirits, claims to be this prophesied bride. As their lives intertwine, they navigate the complexities of love, destiny, and the supernatural, uncovering deep-seated connections and confronting their intertwined fates.