After suffering defeat in battle, Geonmu, a once-mighty emperor, finds himself stripped of all authority and taken captive by the rival nation. Deprived of his dignity and liberty, he is compelled to serve as the personal toy of the stunning yet ruthless Yeonhwa. Yeonhwa, who once forcibly took possession of Geonmu's body, now aims to dominate every element of his existence—his actions, his thoughts, and even his feelings. Despite this, each night the emperor sobs, questioning whether Geonmu has truly erased him from memory, whispering heartfelt declarations of love with quivering lips. "Your Majesty... you are beautiful." Yet Geonmu struggles to discern whether the turmoil within him is born of hatred or something far more perilous. As the distinction between enemy and lover starts to fade, Geonmu grapples with the question: Is this suffering a result of betrayal or the burden of a love that should never have come to be?