After a prophetic dream reveals a steamy wedding night with the Duke of Biflten—a man rumored to be a bloodthirsty madman whose gaze turns people to stone—Ilyin finds herself living that very reality. To her surprise, the Duke proves to be unexpectedly gentle behind the veil of darkness, granting her ten nights of tenderness while keeping his face strictly hidden and offering her the freedom to leave at any time. However, when Ilyin finally gathers the courage to ask to see his face, the Duke’s kind facade fractures to reveal a dark, possessive obsession; he grants her request on the singular, chilling condition that once she sees him, she can never leave his castle again.