Cursed with a heart that literally turns to ice if she feels love, Queen Lyra has ruled the Frozen Realm with cold precision for a century. When rebel leader Kael is captured after attempting to steal her kingdom's sacred heartstone, she offers him a choice: execution or become her personal guard and help her root out the traitors in her court. Kael agrees, intending to use his position to continue his rebellion. But as they navigate glittering ballrooms and deadly political schemes, he discovers the vulnerable woman beneath the icy crown, and Lyra finds her frozen heart beginning to crack. With an ancient enemy threatening both their worlds and her curse nearing its final stage, they must choose between their duties and a love that could either save their kingdoms or shatter her completely.