At eight years old, a boy is forced to “marry” an invisible ghost and live in her haunted mansion. Taking pity on him, she secretly cooks and cleans, only to discover that he can suddenly see her. As they grow closer, he gives his ghost bride a name and promises to marry her properly one day. But when he is revealed to be a prince, they are torn apart. Years later, the young groom returns as a powerful emperor, determined to reunite with his ghost bride and finally fulfill his promise.