Aideen, the esteemed daughter of a duke, is the Emperor’s assassin and the leader of ‘Owl.’ For giving everything and serving her Lord faithfully, she was betrayed and sentenced to death by guillotine. Abandoned by her Lord, her life came to an end, yet the moment she opened her eyes again, she realized she had returned to a time when she was still only 17. In order to get her revenge, she decided to destroy Ferdi, a country that the Emperor cherished more than his life. "You are beautiful, Milady. Especially those red eyes of yours." The man who personally sent the order to have Aideen executed, the Prince from the enemy country, Diceon, unexpectedly began to interfere with her life! The story of Aideen, the woman who was abandoned by the Emperor and was given a second chance at life to get her revenge and to destroy her home country, now unfolds!