When the Masseuch Empire come to its end, the eldest child of the Masseuch family, Hanaele, was sent to an assassin camp. During her teenage years, the camp commanders were training her to become a spy and protect the wealth of the Ashur Empire. While still at the campsite, the queen saw her potential. Among all the candidates to debut as the sword princess of the most prosperous empire, she gave Hanaele the special mission that has been waiting for her throughout the years.