The news suddenly arrives at the home of duke’s daughter Ilya: she is to be engaged to Crown Prince Loren. When Loren appears before her at the palace, he shows no emotion and carries a vaguely dangerous air about him—most of all, those dull, lightless eyes. “I know those eyes.” Ilya has memories of her previous life: a harsh past where she was abused by her mother and eventually froze to death on a balcony in the snow. In the moment before she died, the reflection she saw in the window had the very same eyes as Loren. From the king, Ilya learns Loren’s past: thirteen years ago he went missing in a neighboring country, was raised as an assassin, and has carried out countless missions. For the sake of the family who, in this second life, taught Ilya what love is, she must make this engagement work. And she can’t just abandon the wounded Loren either. Little by little, Ilya’s feelings begin to fill the empty spaces in Loren’s heart, slowly turning into an unconscious, genuine love…